Q&A - Flashing Yellow and Green Traffic Lights
I'm a visitor from Virginia, and have been driving in the Vancouver area for a few times in the past. I have read the DriveSmartBC website information on flashing traffic lights but I still need some assistance: what is / are the difference(s) between a flashing yellow light and a flashing green light?

I was wondering when they put up new speed limit signs up, do they need to put the bright NEW tab under the changed speed limit posting? Should this tab be used for all changes on B.C.'s roads? It would help drivers notice the changes and avoid getting traffic tickets for making a mistake.
At the corner of Johnson Road and Russell Avenue in White Rock there is a regular crosswalk sign that has been in place for many years. Two years ago, White Rock installed traffic lights along with pedestrian "Walk - Don't Walk" signals; but has not taken down the old crosswalk signs.
There is a school near where I live, with a 30 km/h school zone. Driving one way past the school you encounter the School Zone sign, but after you pass the school, there is no corresponding sign showing the speed increase to 50 km/h.
The case of Chang v Alcuaz examines an intersection collision where the drivers approached each other at right angles. Both claim that they were facing a green light when they proceeded into the intersection. It is interesting to see how the judge determines which driver had actually faced a green traffic signal.