Copyright 2015, 2018, 2019, 2022 Solutions by Design
Improper Traffic Signals
Here are some examples of improper traffic signals.
Federal law (MUTCD 4D-11) requires 2 (visible) overhead signals.
[Mott Av at B22 St.]
Signals should be visible (MUTCD 4D-12. The one on the right isn’t because of both vertical and horizontal alignment issues. [Beach Channel Drive at Cornaga Av.]
Federal law (MUTCD 4D-11) requires 2 (visible) overhead signals.
[Edgemere Av at B41 St.]
Federal law (MUTCD 4D-11) requires 2 (visible) overhead signals.
[Rockaway Freeway at B25 St. - This is typical of Rockaway Freeway intersections.]
Signal yellow interval must be longer when the road slopes down to the intersection. Here all approaches slope down to the intersection but yellow time is only NYC standard. [Beach Channel Drive at Cornaga Av.]
Proper yellow time is calculated according to federal guidelines available here. At a 30 mph approach (not speed limit) speed, the signals should be yellow for 3.2 seconds.