Traffic Lights

At a green light, you may...

- Turn left

- Go straight

- Turn right after yielding to vehicles and pedestrians (always yield when turning)

At a yellow light, you must...

- Stop if you can do so safely

- Otherwise proceed with caution

At a red light, you must...

- Stop completely (stop line, crosswalk, edge of sidewalk, edge of intersection)

- Wait until light is green and way is clear before proceeding

- May turn right if way is clear

- May turn left if moving from and to one-way road and way is clear

Advance green light or arrow

- Flashing light or left-pointing arrow + green light

- Called advanced as oncoming traffic still faces a red light

- May turn left, go straight, or turn right

Simultaneous left turn

- Left-turn green arrow + red light

- May turn from left-turn lane

- If yellow arrow appears, do not start turn (complete it if you already have)

- If light is green, you can still turn left if way is clear (if it turns red, complete turn)

Transit priority signals

- Round signal on top of traffic light bar w/ vertical white line

- Lets transit vehicles go through or turn left or right while all conflicting traffic faces right

Fully protected left turn

- Separate signals for left-turning traffic and traffic going through intersection or turning right

- Left-turn green arrow for traffic in left lane, while red light for traffic going straight or turning right

- Red light for traffic in left lane, while green light for traffic going straight or turning right (during which you may not turn left)

Flashing red or yellow light

- Flashing red: come to complete stop

- Flashing yellow: drive with caution

Blank traffic lights

- Happen during power failure

- Yield right-of-way to vehicles in intersection and those entering from right

- Use intersection same way as one with all-way stop signs

Traffic beacons

- Single flashing light hung over intersection or placed over signs or obstacles

- Flashing red: come to a complete stop

- Flashing yellow: proceed with caution