Today the City of Lawrence announced the operational status of a new crosswalk on 11th between New York and New Jersey. I’m a big fan of pedestrian safety, especially when it benefits kids on the way to school, but I was a little confused about the description of the new crosswalk and related signaling:
The unique design consists of three lights (two reds and one yellow) configured like an inverted triangle. The signal remains dark until activated by a pedestrian pushing a button. The signal then flashes yellow for approximately six seconds followed by a steady yellow for approximately four seconds and followed by a double, steady red during the time pedestrians are receiving a “walk” signal. Once the pedestrian display changes to “Don’t Walk,” the motorist’s signal changes to alternating flashing red. During the flashing red, motorists may proceed through the crosswalk after stopping if the pedestrian has completed crossing.
The operation of this crosswalk appears straightforward from the pedestrian point of view. Press button; wait for walk signal; walk across. Things are a bit more vague for motorists. Here are several questions I can think of with answers inferred from the press release and tri-fold pamphlet, along with some common sense:
- What do I do if someone is crossing in the crosswalk?
- Stop and wait for the person to finish crossing.
- What do I do if the bottom yellow light is flashing?
- This means that a pedestrian has just activated the signal. It’s probably best to slow to a stop and allow the person to cross.
- What do I do if the bottom yellow light is solid?
- A pedestrian activated the signal a few seconds ago and is waiting to cross. It’s probably best to slow to a stop and allow the person to cross.
- What do I do if the top two lights are red?
- The two red lights are equivalent to a stop sign or red light and you are required to stop at or before the line to let the pedestrian cross
- What do I do if the two red lights are alternating flashing red?
- If there is a pedestrian in the crosswalk you must either stop or continue to stop. If the pedestrian has cleared the crosswalk you may proceed.
While I think that a crosswalk with lights to indicate it is in use is a great thing, some simplification could be done here. With all of the various light states above, the following always applies:
- What do I do if someone is crossing in the crosswalk?
- Stop and wait for the person to finish crossing.
Perhaps it would be best to reduce the crosswalk to a binary state: either someone has pushed the button and the crosswalk is lit, or it is not in use and therefore not lit. This would reduce the four light states in to one single state and greatly simplifies what a driver needs to keep track of. If you would like to give the driver warning, use a solid red preceded by a solid yellow for a few seconds. This would closer emulate the traffic signal that drivers are used to obeying. I have seen other crosswalks that flash yellow and transition to solid yellow. Either of these solutions seem simpler and more effective than the High Intensity Activated crossWalK described above.