RULES OF THE ROAD
(State of Colorado)
8. Safe driving tips
8.6. Changing lanes
You must check for possible hazards or vehicles in the lane you want to enter. This means you must check for traffic ahead, to the side, and behind your vehicle before you change lanes. Changing lanes includes: Changing from one lane to another, passing another vehicle, merging onto a roadway from an entrance ramp, and entering the roadway from the curb or shoulder.
When changing lanes, you should:
1. Turn your signal on.
2. Check your mirrors.
3. Check your blind spot. (Look over your shoulder.)
4. If it is safe, you may change lanes.
5. Turn off your signal after completing the lane change.