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Video: Collisions Down at Rosslyn’s ‘Intersection of Doom’

by ARLnow.com — December 16, 2015 at 3:45 pm 0

(Updated at 4 p.m.) Once one of Arlington’s top 5 intersections for collisions — particularly those involving pedestrians and cyclists — the “Intersection of Doom” in Rosslyn now isn’t even in the top 25.

Safety improvements at the intersection have dramatically reduced accidents at the intersection of Lynn Street and Lee Highway, said Larry Marcus, the county’s head of transportation engineering, in a new county-produced video.

Illustration of bicycle-vehicle accident at Lee Highway and N. Lynn Street, as provided by the cyclistThe county faced a challenge with the intersection: how to design quick and relatively inexpensive improvements at an intersection where 1,700 bicyclists per day try to cross a street also being crossed by 600 vehicles per hour exiting I-66.

“The obvious thing to do is separate these movements,” Marcus said.

Bicyclists and pedestrians now get a 10 second head start to start crossing Lynn Street while the traffic exiting I-66 waits at a red light with an illuminated no right turn signal. Pedestrians and cyclists then get a don’t cross signal while traffic turning right onto Lynn Street clears out.

Those relatively simple “operational improvements,” along with traffic enforcement and a public education campaign by Arlington County police, have dropped the intersection out of the county’s top 25 most crash-prone, Marcus says.

Despite the improvement, Marcus said the county is getting ready to begin a planning process for a more permanent solution to pedestrian-car conflicts at the intersection.

“There’s certainly an opportunity to build something,” he said.

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