Traffic signals in Colorado
The Colorado Driver Handbook shows or names everything on this page: 12 in all, on pages 7, 14.
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Steady Red Light
Stop until a green light appears. After stopping and yielding to pedestrians and other traffic, and if not prohibited by a traffic sign, you may turn right while the light is red. Also, you may turn left on a red light if you are turning from a one-way street onto another one-way street, unless prohibited by a sign.
Manual page 7 · Open this page in the manual (Manual page 7)
Steady Yellow Light
A red light is about to appear. Stop unless you are already in the intersection.
Manual page 7 · Open this page in the manual (Manual page 7)
Steady Green Light
After yielding to any vehicle or pedestrian within the intersection or adjacent crosswalk, you may proceed straight through or turn right or left unless a sign prohibits such turns.
Manual page 7 · Open this page in the manual (Manual page 7)
Red Arrow
A lighted red arrow means you must stop and may not turn in the direction shown.
Manual page 7 · Open this page in the manual (Manual page 7)
Green Arrow
A lighted green arrow, by itself or along with a red, green or yellow light means you may turn in the direction shown by the arrow. If the green arrow goes off, but the circular green is on, you may still turn after yielding to through vehicles and pedestrians, unless prohibited by a sign or red arrow.
Manual page 7 · Open this page in the manual (Manual page 7)
Yellow Arrow
A lighted red arrow is about to appear. Stop if you are not already in the intersection.
Manual page 7 · Open this page in the manual (Manual page 7)
Flashing Yellow Arrow
A flashing yellow arrow means the driver turning left should proceed with caution and must yield to oncoming traffic and pedestrians. Never rush through a flashing yellow arrow, take the time to check for a clear path through the intersection. The signal will then switch to solid yellow, telling the driver the light is about to turn red and to not enter the intersection if they can stop safely. Finally the signal will turn red, which means the driver must stop.
Manual page 7 · Open this page in the manual (Manual page 7)
Flashing Red Light
A flashing red light means the same as a STOP sign. Stop; then go only after yielding to pedestrians and other traffic.
Manual page 7 · Open this page in the manual (Manual page 7)
Flashing Yellow Light
A flashing yellow light is a warning of a hazard. Slow down and proceed with caution.
Manual page 7 · Open this page in the manual (Manual page 7)
HAWK Signal (Pedestrian Hybrid Beacon)
HAWK signals are traffic signals that allow pedestrians to cross the road safely. HAWK signals operate in a yellow red flashing sequence to alert motorists that pedestrians need to cross the road.
Manual page 7 · Open this page in the manual (Manual page 7)
Signal Not Working (Dark)
If the traffic signal is not operating or is malfunctioning, treat the intersection as a four way stop.
Manual page 7 · Open this page in the manual (Manual page 7)
Ramp Meter Signal
Some freeway entrance ramps have traffic signals which make merging easier and improves traffic flow. On metered ramps, you must stop and wait to be released on a green light to enter the freeway.
Manual page 14 · Open this page in the manual (Manual page 14)