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Roads


VDOT ignores own data, pushes widening I-66

When VDOT began their "multimodal" study of I-66 inside the Beltway, many assumed that this was just a formality and, regardless of what the models showed, VDOT would recommend widening the road. Turns out, that seems to be exactly what's happening.


Photo by JoeInSouthernCA on Flickr.

When the Virginia Department of Transportation (VDOT) wanted to widen I-66 in a few places, local leaders argued that they hadn't studied the corridor thoroughly enough. Under pressure, VDOT agreed to do a study, and the results are now coming out.

According to VDOT's own data, an option that doesn't require widening I-66 would do more for mobility than widening it. Despite this, VDOT officials told a group of citizen and government stakeholders on Tuesday that they plan to recommend the widening option. Was this just a foregone conclusion from the start?

VDOT showed 4 "packages" of changes at 2 public meetings, along with stats for how each would likely affect travel times, traffic volumes, and more.

Package 1, which would make the existing lanes of I-66 into HOT lanes, free for vehicles with 3 or more people and tolled for 1 and 2, brings almost as much benefit as Package 2, which would add a 3rd lane on top of that. But package 1 costs about $350-650 million less.

Package 1 (convert existing lanes to HOT lanes):

Package 2 (add 3rd lane, convert all to HOT lanes):

Allen Muchnick of the Arlington Coalition for Sensible Transportation was one of the stakeholders in Tuesday's meeting, and got to see the draft final report. It lists the following metrics for packages 1 and 2, plus another option called a "sensitivity test," which tried only applying tolls during the peak period where I-66 is HOV-only today.

Here are the key metrics. The "Pkg 1 + ST" column reflects this new option from the sensitivity test.

MetricPkg 1Pkg 1 + STPkg 2
Daily Person Miles Traveled+40,490 (0.8%)+318,388 (5.4%)+267,509 (4.6%)
Person Throughput Measure+5,632 (1.2%)+27,669 (6.1%)+24,098 (5.3%)
Peak Period Congested VMT+10,726 (2.8%)+11,230 (2.9%)-65,164 (-16.9%)
Transit Ridership+1,423 (1.1%)+2,568 (1.9%)+2,124 (1.6%)
Added Capital Cost$33M$33M$345-695M
Added Operating Cost$23M$23M$25M

This new option, tolling at peak times, appears to move more people by both car and transit than the widening, yet saves hundreds of millions of dollars. Even without this option, it's likely that widening the road at such cost, and with all the disruption it will cause, is not worth gaining only a few percentage points of extra movement.

The metric of "peak period congested VMT" measures the wrong thing. This is the amount of vehicle miles traveled that happen in an uncongested road. But congetion, per se, is not the problem; a short drive in traffic is better than a long drive without it. The goal is to move people, or more accurately, get people where they need to be.

There were plenty of flaws with this study from the start. This assumes, as the "baseline," that Virginia has implemented every change in the regional Constrained Long-Range Plan (CLRP). That includes adding the 3 "spot improvements," which would already widen I-66 in several places; and changing I-66 to HOV-3 and assuming that nobody cheats the HOV restrictions.

The CLRP also includes some projects which will help in the I-66 corridor but have no funding today, like lengthening all Metro trains to 8 cars and adding new bus service in the area. Hopefully these will happen, but there's no guarantee.

A better study would have used today as the baseline, and looked at the CLRP changes like the "spot improvements" as some of the options. After all, if another change helps more, it's far from too late to build that instead. We would also then be able to better see the effects of this phantom bus service, though I'm told the full report does provide more detail on the effects of these proposals.

BeyondDC reminded me yesterday about a flowchart I made back in 2009. I've updated it slightly:

Is the urge to widen I-66 coming from engineers who can't shake the paving habit, or political pressure from above? If a transportation agency is unwilling to actually recommend anything other than widening, regardless of what a study shows, then that study really is the sham as people accused, and I feared, at the time, and VDOT might as well change its name to Virginia Department Of Paving Your Community.

Roads


Widening I-66 achieves little vs. cheaper alternatives

Virginians have debated widening I-66 for many years, but preliminary results of a VDOT study show that I-66 commuters could get the same benefits and save hundreds of millions by just converting existing lanes to HOT lanes instead. Drivers and transit riders alike would also benefit from turning the shoulder of US-50 into a dedicated bus lane.


Photo by Mrs. Gemstone on Flickr.

VDOT is close to completing its "multimodal" study of the I-66 corridor inside the Beltway. The study team looked at a wide variety of options, from Metro to buses to adding lanes to Transportation Demand Management (TDM) strategies like better rider information and dynamic ridesharing.

The full study isn't out yet, but VDOT has released information on four "packages" of improvements they modeled:

  1. Make both lanes of I-66 free for buses and HOV-3 at all times, and toll single-passenger vehicles (SOV) and HOV-2 at all times.
  2. Add a 3rd lane to I-66. Make all 3 free for buses and HOV-3, tolled for SOV and HOV-2 at all times.
  3. Add a 3rd lane to I-66 to be HOV-2 in the reverse peak. In the peak direction (eastbound mornings, westbound evenings), keep all lanes HOV-3. Off-peak, leave all lanes open to anyone (as they are today).
  4. Make the shoulder of US-50 into a bus lane. Add express bus service to downtown DC from places along the I-66 and Dulles corridors.

All of these assume that Virginia has finished all of the projects in the existing Constrained Long-Range Plan (CLRP). That includes the so-called "spot improvements" that widen I-66 in select places, and also converting I-66 to HOV-3.

Packages 1 and 2, the HOT lane options, both would help SOV and HOV-2 drivers and hurt HOV-3 drivers, compared to the default of having I-66 be HOV-3 only. But there's not a whole lot of difference between the two. According to the model, having the extra lane would slightly harm transit and speed drivers by about 2%, at a cost of $310-685 million.

Package 1 (convert existing lanes to HOT lanes):

Package 2 (add 3rd lane, convert all to HOT lanes):

Package 3 induces more driving but doesn't do much to change travel times for anyone. Package 4, the US-50 bus lanes, would improve travel times on transit by 7%, and drivers benefit by a very small amount. The presentation says that a number of people switch from rail to bus because the buses improve, which should also help with crowding on Metro.

Package 3 (add HOV lane):

Package 4 (bus lane on US-50):

The packages also factor in projects like better bicycle and pedestrian facilities, TDM programs, Integrated Corridor Management (ICM) like digital signs and ramp meters, added bus service and more.

These graphs are all a tiny bit confusing because VDOT assumed as the "baseline" that I-66 has changed from the current HOV-2 to HOV-3, and that they've already widened in some places with "spot improvements."

It would have been more helpful for laypeople if we could also compare each alternative to what would happen if VDOT didn't build the "spot improvements" and didn't change to HOV-3. In fact, an initial impetus for this study was to find out whether the spot improvements are a good idea in the first place, or whether other options would work better.

VDOT will release the study, including more details and its recommendations, in June. It seems unlikely that they would recommend widening I-66 given these results. A combination of options 1 and 4 seems like it could deliver real improvements to both drivers and transit riders without spending a lot of money on complex, unpopular, and minimally helpful highway widening projects.

Residents can provide comments to VDOT by emailing info@i66multimodalstudy.com.

Update: The original version of this post showed incorrect graphs for packages 2 and 3. The graphs have been corrected to match those from the VDOT presentation.

Government


Virginia needs a tea party to overthrow Agenda 639

It's time for Virginia residents to storm the harbor of their state capitol and throw the tea overboard. Last week, Governor Bob McDonnell signed a transportation bill that massively expands the hand of government and overrides local decisions about how communities should grow and change. How's that for big government?


The Gadsden flag, from Wikipedia.

SB 639 has an unprecedented, frightening provision that lets the Commonwealth Transportation Board, appointed by the governor, override a city or county's own plans. Localities will have to include transportation projects the state wants, no matter what the local residents of that area think.

It's astounding to see this from a supposedly conservative governor and state legislature. One of the most common­sense principles of current conservative movements is smaller government.

The national, and Virginia, Tea Party holds as a fundamental principle that "Governing should be done at the most local level possible where it can be held accountable." Individual counties and cities ought to be able to decide how they want to grow, or not grow. Loudoun, Charlottesville, and Roanoke should make these desicisions instead of the state government in Richmond.

Tea Party groups have been alarmed about "Agenda 21," which they say is a United Nations plan to undermine property rights. There's no UN conspiracy (though planners shouldn't be too quick to dismiss the underlying fears), but Virginia has a very real assault on liberty happening today. Call it Agenda 639.

Agenda 639, or Senate Bill 639 as passed into law, forces each county to match local transportation plans to dictates from the Commonwealth Transportation Board. If a locality doesn't want a particular transportation project, too bad. If VDOT spends money on the project anyway and a county rejects it, they have to reimburse VDOT, even if the county never wanted the project in the first place.

That's not all. Virginia has for many years used a formula to allocate transportation money to the various counties and cities. That gave local levels of government more say over their transportation. Agenda 639/SB 639 moves hundreds of millions of dollars out of the formula, giving the CTB unprecedented control of how it's spent. The governor in Richmond will now have more power to spend tax money than local leaders. That's the opposite of "the most local level possible."

If Virginia's small-government conservatives aren't alarmed at this, they should be.

One of the debates on the national transportation bill is to what extent the federal government should mandate that states and localities spend money on specific types of projects, even if those are projects, like paving sidewalks, that many people support to improve safety and economic development of an area.

The House transportation bill simply eliminates these set-asides. This has led many people in cities where people walk and bike in large numbers to worry that their state departments of transportation would refuse to fund such projects.

A bipartisan amendment from Ben Cardin (D-MD) and Thad Cochran (R-MS) found a common sense and small government approach to this issue: let local communities, or regional metropolitan planning organizations (MPOs), choose how to spend the money themselves.

This is the right strategy for both liberals and conservatives. There's little enthusiasm for making more transportation decisions in Washington. Even in Washington, we'd rather make the transportation decisions at 55 M Street, SE (the District Department of Transportation headquarters) than inside 1200 New Jersey Avenue, SE (the US Department of Transportation), 2 blocks away.

Look at the saga over streetcar tracks on the 11th Street bridge. Federal regulations made it impossible for DC to put tracks on a bridge, a project local voters supported and would have paid for with local money. Too many transportation projects are too expensive and take too long because of federal rules.

Let's get rid of many of these federal rules and give the power to "the most local level [of government] possible." Transferring federal power to big state governments isn't enough to advance liberty. Give the power to local counties and cities.

With this bill on his record, Bob McDonnell might well turn out to be Virginia's most big-government governor ever. Let Northern Virginia decide what Northern Virginia wants, let Hampton Roads choose what's best for Hampton Roads, and let the Appalachian west set its own course.

Roads


"My way or the highway" bill awaits VA governor's decision

Who should decide how an area grows? Local officials and voters, or the government in Richmond? The focus on decisions would shift under Virginia's latest transportation bill, which gives the Virginia Department of Transportation (VDOT) new powers to supersede local planning.


Photo by debcll on Flickr.

The bill, passed on March 10, requires local governments to revise their plans to include projects favored by the Commonwealth Transportation Board, a governor-appointed, 17-member body that oversees VDOT.

Localities that don't adjust their plans to confirm state priorities would have their transportation funds taken away and given to other jurisdictions. If they want to significantly alter a project to better suit local needs, like lengthening a proposed bridge to help protect a stream, or re-routing a planned road to protect a neighborhood, they would pay the extra cost.

If a locality rejected a project outright, local taxpayers would have to reimburse VDOT for any money it has spent, even if they've rejected it based on hard data, or if the locality never wanted the project in the first place.

Governor Bob McDonnell has until mid-April to either sign the bill into law or use his line-item veto authority. Local officials and groups such as the Virginia Municipal League and the Virginia Association of Counties are asking McDonnell to remove the provisions giving VDOT its new powers, as are smart growth advocates, and many local governments.

The Coalition for Smarter Growth (CSG) has an action alert for Virginia residents to ask local governments to challenge the bill, and to contact the governor directly.

Stewart Schwartz of CSG says, "VDOT is notorious for failing to consider a range of alternatives and community impacts, but can now punish local governments and local taxpayers for daring to offer alternative solutions or for recommending cancellation of ill-advised projects based on information about environmental or community impacts. In the end, the state will waste billions of dollars."

Lieutenant Governor Bill Bolling, who cast the tie-breaking vote in the Senate to pass the bill, described the legislation as "a modest effort to ... improve the coordination of land use planning and transportation planning."

Critics might substitute "coercion" for "coordination," and "overreaching" for "modest." In editorials, the Roanoke Times observed that the bill "promotes ill will rather than harmony," and the Lynchburg News & Advance raised the specter of VDOT as a "mega-agency with vast powers over local governments." Both alluded to the bill's incompatibility with Governor McDonnell's professed attitude toward mandates.

The McDonnell administration's approach stands in contrast to a bipartisan 2007 law that required localities over a certain size to designate "urban development areas" (UDAs). These are specific areas where zoning would allow future growth and reduce pressure for more sprawl. The law called for siting UDAs near existing infrastructure that could handle the growth.

At the time, Republican Delegate Clay Athey promoted the concept as a cost-saving measure, since the state pays for roads to serve far-flung developments that come from poor local planning. The state would save money on roads, local governments would save on infrastructure and services, and residents would save on transportation.

The UDA rule enjoyed broad support from smart-growth proponents, fiscal conservatives, and the Kaine administration. But this March, Governor McDonnell signed legislation that makes UDAs optional and allows local voters to abolish them. He portrayed UDAs as "burdensome mandates on localities," despite the fact that the state paid to help 32 localities meet the law's requirements, and despite evidence that compact development saves money in many ways.

Why would the state weaken one bill that coordinated land use and transportation planning to the benefit of both state and local governments, only to replace it with another bill that forces coordination at the expense of local voices and priorities?

The reason may be less about coordination or cost, than a simple preference for highways. VDOT and the governor have been pushing contentious highway projects. Here are some examples:

  • Charlottesville Bypass, widely opposed at the local level. VDOT has largely disregarded the better "Places29" alternative.
  • Widening most of I-81 to 8 lanes at a long-term cost of $11.4 billion.
  • The Coalfields Expressway in the far southwest, which could cost $2.1 to $4.2 billion.
  • A new Potomac River crossing and Outer Beltway, which past Loudoun County Boards have opposed.
  • Route 460. McDonnell replaced most of the Virginia Port Authority's Board of Commissioners to move the project forward, ignoring regional officials' requests to spend the money on bridge and tunnel bottlenecks.

Schwartz believes that Virginia's Secretary of Transportation and VDOT Chair, Sean Connaughton, "isn't interested in better land use at all, but in the ability to force controversial highway projects through communities. In the process, he is destroying the necessary coordination and discussion between local, regional, and state officials."

The governor should restore 2007's conservative, cost-saving approach to transportation

Roads


6-year study suggests tweaks around 14th Street bridges

Near the Jefferson Memorial, 5 bridges cross the Potomac carrying motor vehicles, bicycles, pedestrians, the Metro, and freight and passenger trains. How can they be improved?


Photo by { JHGagle | Photo } on Flickr.

The Federal Highway Administration, DDOT, VDOT, and the National Park Service have been working on an Environmental Impact Statement (EIS) for the 14th Street Bridge corridor since 2006. They looked at the roads and paths on the bridges themselves and for some distance on and around I-395 and Route 1 (14th Street and Jefferson Davis Highway).

The study started with a long list of ideas from a number of public meetings, from double decking the 14th Street bridge or building a circumferential Metro line, to instituting cordon pricing or tolls, to painting murals on the concrete walls.

They analyzed a number of options and condensed them down to 3 bicycle and pedestrian options, 4 roadway options, and 6 Transportation Demand Management options. This post looks at the roadway and TDM alternatives; the next one will delve into the bicycle and pedestrian options.

Vehicular options

One of the most significant conclusions from the draft EIS is what it chose not to recommend: More single-passenger vehicle capacity. The team looked at adding new general-purpose lanes (which, on a freeway-type bridge, aren't as much "general purpose" as "motor vehicle only") or HOT lanes. Once Virginia decided not to run HOT lanes through Arlington, the HOT lane options became moot, and adding new auto capacity generally did not reduce congestion.

There are 5 remaining proposals that would affect motor vehicles:

Add a bus lane. A lot of commuter buses drive to the Pentagon and then over the 14th Street bridge to DC, and many local buses also cross in this area. This alternative would use the existing shoulder of the Rochambeau bridge (the center of the 3 road bridges, which carries the express lanes in both directions) for a bus lane, and convert one lane on 14th Street to a bus lane.

The heavy volume of buses moves a great many people in this corridor. Helping buses bypass congestion and give riders a quicker ride would further improve the value of taking transit from many parts of Virginia.

Ban left turns at 14th and C (at a cost of about $203,000). C Street SW ends at 14th, in the last intersection with a traffic signal before the bridge. The study says that giving time for vehicles to turn left from southbound 14th onto C, or left from C onto southbound 14th, creates significant delay, and this option would forbid these turns. Drivers would only be able to turn right in or out of C.


Click to enlarge (PDF).

On its own, this sounds like a bad idea because it would move further away from a functional grid in this area, and make 14th more like a freeway. It could, however, be a reasonable way to reduce some of the extra delay that comes from the bus lane option, making that a little more palatable.

The most important question, which the report does not specify, is how this would affect pedestrians. People cross on foot to get to and from the Holocaust Museum, for instance, and already the signal here forces them to wait long periods of time for the various movements. Removing the left turns could allow more pedestrian crossing time, or it could make things worse, depending on the final signal timings.

DC should also add a marked crosswalk along the south side of this intersection, where there is none today. Every side of every intersection ought to have a marked crosswalk, regardless of its effect on traffic, but an animation of the proposal makes it appear that there would be no traffic effect with left turns prohibited, anyway.

For the final EIS, the team should investigate pedestrian crossings and suggest timings that help them cross more safely and with a shorter wait.

Restripe around Maine Avenue, 7th and 9th Streets ($185,000). There are a lot of ramps on and off in this area, creating a lot of merging and weaving. This option would narrow the on-ramp at Maine Avenue to 1 lane instead of 2, reducing the amount of merging on the freeway itself.

Also, it would add a solid white line between some of the freeway's lanes east of 9th Street. Drivers getting on at 7th Street would only be able to then continue to the 3rd Street tunnel (the one that goes under the Mall to New York Avenue, also signed as I-395), and drivers getting on from 9th Street would have to continue onto the Southeast Freeway (now signed as 695) instead. Drivers might ignore this line, but FHWA hopes it will decrease weaving.


Click to enlarge (PDF).

Remove some ramps on the Virginia side ($2.7 million). There are 10 ramps on and off 395 right around the Pentagon, also creating a lot of merging and weaving. This alternative suggests removing the ramps from 395 northbound to the GW parkway northbound, and the matching ramp from the GW Parkway southbound to 395 southbound. Drivers can still get where they need to go by taking Washington Boulevard (Route 27) instead, which is actually shorter, anyway.

In addition, this alternative would change around the ramps at Boundary Channel Drive, the access road to the Pentagon north parking lots. Now, there are cloverleaf-style ramps on and off of 395 southbound, so that cars coming from or going to each direction of Boundary Channel have their own ramps.

Instead, the ramps in the southwest quadrant would go away, and the northwest quadrant ramps changed so that cars can turn in either direction on and off of Boundary Channel.


Ramps in gray would be removed. Click to enlarge (PDF).

Arlington has proposed another option to add roundabouts instead of traffic signals at the ends of the ramps.


Potential roundabouts on each side of 395. Click to enlarge (PDF).

Transportation Demand Management options

Reconfiguring roadways is not the only way to reduce congestion. Transportation Demand Management is the field concerned with helping people better understand their travel options besides solo driving. Maps, real-time information, and public service ad campaigns can help people choose transit. Employers can provide incentives or assistance for people to carpool, telecommute, or commute outside peak hours.

The TDM options that the DEIS proposed to carry forward to the final version include:

  • Expand incentives for telecommuting
  • Expand flexible work hours
  • Increase prices for parking and/or decrease supply
  • Better coordinate among agencies along the corridor (Federal, District, state, and local) to share information and respond to crashes or other incidents
  • Create a program to educate drivers in the corridor in "[crash] avoidance maneuvers and defensive driving skills"
  • Make signs better and more consistent across the corridor

The study team is accepting comments on the draft EIS until March 15th. They will then begin work on the final EIS. I will send them all comments made on this post through at least the end of Wednesday, March 14. If you want to send them your own, more detailed comments, you can do so through this form.

The bicycle and pedestrian proposals, meanwhile, are worth a whole discussion on their own. Part 2 will examine these in detail.

Roads


Will VDOT be creative with the I-66 corridor?

The Virginia Department of Transportation is currently studying transportation in the I-66 corridor inside the Beltway. A public hearing in Arlington on Wednesday will be a critical chance to weigh in on the smartest investments.


Photo by M.V. Jantzen on Flickr.

This study could lead to just about any mobility improvement: light rail on Route 50, tolls, bus lanes, changes to the HOV structure, or more Capital Bikeshare stations.

But especially given Governor McDonnell's heavy emphasis on in new and wider roads, smart growth advocates should be keeping a particularly close eye on the results, as it could set the stage for a new push to widen I-66 through Arlington.

The whole reason VDOT is doing this study comes from a battle in early 2009. VDOT wanted to widen I-66 in some places, but advocates argued they needed to analyze other options instead of just assuming widening was the answer. Arlington and Fairfax members of the TPB briefly blocked the project, and agreed to let it proceed on the condition VDOT do this study.

Will they truly be open to more creative multimodal options, or simply got through the motions only to reach a predetermined conclusion that more road capacity is the only answer?


Map from VDOT defining the I-66 corridor inside the Beltway.

The study's mission is to "identify a range of multimodal and corridor management solutions (operational, transit, bike, pedestrian, and highway) that can be implemented to reduce highway and transit congestion and improve overall mobility within the I-66 corridor, between I-495 and the Theodore Roosevelt Bridge."

One thing that jumps out on the map is that while the corridor has three major east-west roadways, it has just one dedicated bike trail. VDOT doesn't step outside its of its roads-first mentality too often, so Wednesday's meeting will be a good opportunity to send them a message.

I-66 Multimodal Study Open House & Presentation
Wednesday, Dec. 14, 2011
6-8 pm (presentation begins at 6:30 pm)
Arlington County Board Room
2100 Clarendon Blvd, Arlington
If you can't make the meeting, you can still read about the study and send comments to info@I66multimodalstudy.com.

Roads


Virginia turns back toward the 1950s by weakening road connection standards, neglecting populated areas

Virginia took a huge step forward in 2009 to make its sure its new suburban areas included the connected street networks that made older suburbs less congested, safer to walk and bike, and cheaper for local governments to maintain. But it's making a U-turn as the Commonwealth Transportation Board threw out the new standards at a meeting last week.


Photo by La Citta Vita on Flickr.

This step is just one of many from Virginia statewide agencies in recent days that decisively push toward a 1950s view of growth, one which neglects established communities and crumbling infrastructure in favor of brand-new sprawl in the farmlands which ultimately creates even more traffic.

State officials are giving the thumbs down to Metro, light rail and bus transit in favor of highway lane expansion, skipping small but significant improvements that help neighborhoods or key growth areas like Tysons Corner to instead spend billions on megaprojects that drive the region farther apart, and lose focus on key repair needs while weakening the street connectivity standards.

If you live in Virginia, please speak up at a hearing tonight at VDOT's (non-Metro-accessible) Northern Virginia office in Fairfax, or send in written comments.

The connectivity standards reformed a key mistake in suburban development: building neighborhoods composed primarily of cul-de-sacs. In many neighborhoods, there's just one way in and out for any homeowner, to one or maybe two major arterial roads.

While this gives many homeowners the ability to live on a quiet street, it creates problems for everyone. With few entry and exit points, all the traffic gets focused on single intersections at the arterials, causing significant congestion. Kids can't walk or bike to school or even friends' houses when the only route involves going out to the busiest part of the neighborhood and along a wide road designed for high-speed traffic.

And it costs taxpayers. These neighborhoods are very expansive to plow for snow and time-consuming to navigate for ambulances and fire trucks. Subdivisions in Virginia had to wait days or weeks for plowing during the major snows last year because of the way the plows had to constantly backtrack, and people couldn't get out of their neighborhoods without any alternate routes.

Older suburban areas still primarily comprise single-family houses while providing a grid that spreads traffic around and offers many safe routes for non-motorized users. Areas like Columbia, Greenbelt and Reston win constant plaudits for designing suburban areas that lack these shortcomings, with paths to walk and bike that also build community.

The connectivity rules revolved around a simple premise: Once a developer builds a subdivision, VDOT (except in a few counties) then takes over responsibility for maintaining and plowing the roads. Therefore, they should be able to require certain standards to avoid developers pushing all the costs off onto the taxpayer. The General Assembly in 2007 authorized a change, and Virginia briefly jumped far ahead of most states with this progressive policy.

Last week, however, the Commonwealth Transportation Board, a policymaking body appointed by the Governor, voted to drop the old standards, especially the "Connectivity Index" which created a score based on the degree to which a street network was connected or isolated.

Instead, they set some rules for the number of connections out of a subdivision and onto main streets. A development of 200 homes needs 2 connections, though 1 can be a "stub end" road which connects to an as-yet-undeveloped area. Each additional 200 homes will only require one additional connection. It's better than nothing, but still means a new 200-house development can have just 1 way in and out.

Also, a subdivision can add a "collector road" which gives double credit if that road is part of a county transportation plan. So a developer could build 400 houses, all on cul-de-sacs off one major road through the center, and connect that road only at 2 points to major arterials. A typical suburban house can generate about 10 car trips per day, so there will be 4,000 turning movements onto and off of those 2 arterials every day. It's a recipe for major traffic that will harm every other resident who uses those roads.

While Virginia is weakening rules to create better road networks in new suburbs, it's neglecting established areas in favor of greenfield development and traffic-inducing megaprojects. Governor McDonnell and Transportation Secretary Sean Connaughton have made it clear they don't want to contribute to the Silver Line Phase II, even if the federal government, Fairfax, and Loudon all put in more money.

Meanwhile, but McDonnell and Connaughton are eagerly borrowing money to build large freeways like the damaging bypass around Charlottesville or to push an Outer Beltway. Much of the region's future growth will happen in Tysons Corner, but it's not getting transportation improvements it needs. And transit along the Route 1/Richmond Highway corridor is nowhere on the agenda.

Virginia could get far more bang for its precious transportation buck by focusing on local street connections, and most of all repairing crumbling roads and bridges. Instead, the McDonnell administration seems bent on repeating the mistakes of the 1950s: building unsustainable transportation networks at the periphery while letting a more central economic engine sputter. Then, it was center cities across America; now, it's Arlington, Alexandria and Tysons Corner which state officials are looking past instead of toward.

Tonight is an important meeting where Virginia residents can speak up about priorities. VDOT is having a public meeting to hear input on its 6-year priorities tonight, at the VDOT Northern Virginia District Office, 4975 Alliance Drive in Fairfax. Sadly, VDOT doesn't seem to think it's a priority to locate a meeting near Metro. An open house format starts at 6, and presentations by local officials at 6:30 followed by public testimony.

Bob Chase's Northern Virginia Transportation Alliance, a group funded by greenfield developers in Virginia to lobby for roads that would feed suburban development on their land, has been pushing its members to attend and push for an Outer Beltway. Chase even argued, with an apparent straight face, that new highway lanes were more important than repairing crumbling bridges during a round of news stories last week concerning the dire condition of the nation's infrastructure.

It's important to get more residents who support good road connectivity, local street improvements, repairing crumbling infrastructure, pedestrian and bicycle projects, and local transit improvements to counter the sprawl lobbyists. If you can't attend, you can also send in written testimony at this Coalition for Smarter Growth page.

Roads


A real evacuation plan wouldn't look like Tuesday

Imagine we needed to evacuate downtown DC and Arlington quickly, in the middle of the day. What would be the best way to do that?


Photo by tbone_sandwich on Flickr.

We know what wouldn't work: telling all employees to go home at the same time. That's pretty much what happened Tuesday after the earthquake. No bridges or roads were damaged, though some traffic signals had switched to flashing red or had lost time synchronization.

The Metro ran at 15 mph, causing huge crowds and long waits for those riding. But that couldn't have much affected the numbers of cars on the road, since anyone who didn't drive into work wasn't going to drive back home.

Can our transportation network possibly move so many people at once?

Roads are a very flexible form of transportation, but are inefficient in their use of space. Each car takes up a lot of room. The New York Subway's 22 tracks carry as many people as at least 167 lanes of car tunnels would.

If people drove evenly throughout the day, the road network would work optimally, but they don't. Buses and trains work better for moving people in a shorter time period to a small number of locations, because they cost more to run but can fit more people in a smaller space.

There are ways to make the road more efficient. More people could occupy each car. That's the logic behind the HOV rules and slugging on I-395 and other roads. Thanks to slugging and high bus volume, 95/395 is one of the most efficient roadways for its size in the nation (but will actually get less efficient with HOT lanes).

Instead of pushing more carpooling, VDOT actually waived the HOV restrictions on its freeways on Tuesday. That doesn't make a lot of sense. It's like they just threw their hands up and said, "Wow, earthquake! Let's just ignore everything we do to make our roads work better!"

If we knew ahead of time that we'd have to evacuate DC in a hurry one day, but didn't know when, we might actually plan for stricter HOV restrictions than usual. Take a few main arteries and make them exclusively HOV-3 or HOV-4 for the evacuation. Ask workers and residents to find "evacuation buddies" who work in the same office or live in the same inner neighborhood. These people would share the car when evacuation time came.

Once those carpools get to suburban residential areas, people will have to get home, but depending on the type of disaster, just getting everyone out might be most critical. The drivers can give rides that one time to their passengers, or they can wait in places like libraries for family members to pick them up.

Buses could also use the HOV roads, allowing them to travel much faster back to commuter lots and make a return trip to pick up even more people.

Not surprisingly, advocates for more roads and sprawl, like the Northern Virginia Transportation Alliance, immediately jumped on the issue to call for new Potomac River bridges as part of their long attempts to build an Outer Beltway. Such bridges wouldn't actually alleviate existing traffic congestion, but would instead just drive more sprawl development and make the evacuation challenge that much harder.

During the earthquake, Ezra Klein cleverly tweeted, "This earthquake has clear policy implications that back up my previously held political opinions." That's certainly true for NVTA.

I actually learned something from the earthquake that doesn't back up previously-held opinions: we can't count on Metrorail for an emergency. Especially with today's safety concerns, Metro is going to err on the side of limiting its operations in unusual circumstances. That's probably the right move if it's not a matter of life and death. But it means we need to think about evacuations another way.

We also need to think about when evacuations are necessary. Often they're not. One of the best things the federal government can do is not to send everyone home at the exact same time. Instead, the response from OPM seems to be to pull the "everyone go home" handle at any sign of trouble. We know that this causes gridlock.

DDOT Director Terry Bellamy said at a press briefing, "You can never build your way out of an event. I know there was a lot of talk about building more bridges across to Virginia, buidling more bridges into Maryland, but you never know where the event is going to occur," the WBJ reported.

Transportation Planning Board coordinator Ron Kirby told the Post, "Not only can [sending everyone home at once] not be done, we should not try it. ... If you give [people] very good timely information, they are going to make their own decisions in ways, in general, that are going to be better for them and better for the system as a whole."

Kirby also faults Metro for not communicating more; he might not have been on Twitter, because they actually did an excellent job of communicating there. They also sent multiple press releases out over their press list throughout the afternoon and evening. If you were at a train station or on a bus, was communication good or bad there?

The best way of all to get home after a major event like an earthquake? Walk or bike, if you can.

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