Suggested Speed Limit: Take Two

An update to Tuesday’s entry about the timing of the lights on the Pine and Spruce bike lanes. The Bicycle Coalition weighed in today with some clarification and a fancy phrase:

We wrote about the Green Wave for bicycles back in January. The term ‘Green Wave’ applies to any road where signals are synchronized for traffic to flow during the green phase at a set speed. Last week the City unveiled its first Green Wave signs, posted on Spruce and Pine Streets for 20 mph (the lights are actually timed for vehicles travelling 22 mph; why the round down to 20 is unclear).

Suggested Speed Limit

Spotted this on the Pine/Spruce bike lanes the other day. I’ve never seen a sign like that before; a friendly way to get people to drive slower. More of a suggestion than a command.

To elaborate, this sign indicates that a slow car or speedy bicycle can get from Second St. to Broad St., and then from 15th St. to 23rd St. with all green lights, traveling at 20 MPH or so. Many of the traffic lights in the city are timed this way, but this is the first street to actually call it out.