Philadelphia's streetcar infrastructure: Old but interesting
Philadelphia's streetcar network is the largest and busiest in the mid-Atlantic. It has several interesting features, some of which can help inform the planning for DC's growing system.
Philadelphia calls its system trolleys instead of streetcars, because it's vintage from the original trolley era. While Philadelphia did discontinue many of its original trolley routes, unlike DC they also kept many.
The Girard Avenue trolley line even uses vintage trolley vehicles, originally built in 1947. It also runs in a unique on-street arrangement, with tracks down the center of wide Girard Avenue, and stations in narrow floating medians.
Philadelphia's center-running tracks result in fewer conflicts with parked or turning cars, which speeds the trolleys down their route. It's almost-but-not-quite like a dedicated transitway.
Unfortunately, the platforms are too narrow to meet modern disability-accessible design guidelines. If DC were to use a similar arrangement, we'd need wider platforms and thus more street width.
On narrower streets in West Philadelphia, trolleys still run in the center, with bike lanes between the tracks and a row of parked cars.
The trolley subway
Five trolley routes that run on-street in West Philadelphia combine and then move into a dedicated trolley subway to speed through Center City. It's a great way to maximize the efficiency of the system through its most dense and congested section, while still taking advantage of the flexibility of on-street operations further out.
DC once had a short trolley subway too, under Dupont Circle. Today, DC's reborn streetcar plan doesn't call for any. They're hugely expensive, after all. But with the specter of Metrorail capacity constraints looming, and new DC subway lines under consideration, perhaps someday a streetcar subway could again be appropriate in DC.
What else is there?
I've never personally lived in Philadelphia, so my experience with its trolley network is fairly limited. I'm sure there are other interesting features. What did I miss?
Cross-posted at BeyondDC.
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