Notes

Freeway Metering Lights

In some places, traffic entering a freeway or expressway is controlled by metering lights. These lights are posted at the end of an expressway entrance lane to limit the number of cars merging with expressway traffic at any one time.
At most metering lights, only one car is allowed to proceed each time the green signal is displayed.

Flashing red lights are often posted to warn drivers of an upcoming railroad crossing.
Flashing yellow lights are used to warn drivers to proceed cautiously through a pedestrian crossing or school or construction zone.

ost pavement markings are white or yellow. They are used to define lanes, regulate traffic flow, and reinforce information communicated by signs or traffic signals.

Yellow lines always separate lanes of traffic moving in opposite directions
White lines always separate lanes of traffic moving in the same direction
If there are three lanes of traffic in your direction to the right of the yellow line, you should use the right lane when exiting and driving below the speed limit and the left lane when passing. Be careful when entering the left lane as it may be restricted to certain vehicles (e.g. buses and carpools) or occupied by cars moving at a high speed.