Many people are confused about what to do when the light turns yellow. In practice it seems many people view this as a “hurry up” light and race to get through the intersection before the light turns red. This is when collisions happen. Yellow means “start stopping”. The transition from yellow to red takes the indecision out of when to stop. How many times have you seen someone try to squeeze through on a stale yellow on an advance left turn, only to have their path blocked by pedestrians stepping off the curb when the light turns green and the walk sign come on? Then opposing traffic is blocked and you have grid-lock.
mynd44, lalasticlala

you are right

.. but i speed through yellow most times. i am guilty of that.lol. Reason being that...the traffic light system doesnt give the others green until the yellow turns red. The idea is to exit the intersection asap.