PassCo-Ordinated Traffic Signals
Where: On urban arterials where a series of traffic signals has been timed to work together, usually at the start of that series.
Purpose: To give the speed at which the signals ahead have been co-ordinated. A vehicle travelling at that speed should reach each signal as it turns green.
Action Required by Driver: Hold the speed shown, traffic permitting, and you will meet fewer red signals. It is an advisory speed within the legal limit, not a new limit — and it never entitles you to exceed the speed limit or to cross on red.
Why it is worth obeying
Driving faster than the co-ordinated speed does not get you there sooner — it gets you to the next red light sooner. The sign is one of the few that rewards patience with a measurable result.