RULES OF THE ROAD
(State of Colorado)
8. Safe driving tips
To be a good driver you must know what is happening around your vehicle. You must look ahead, to the sides, and behind the vehicle. When you are turning, driving through, or entering an intersection always look left, right, and left again. Scanning helps you to see problems ahead, vehicles and people that may be in the road by the time you reach them, and see signs of warning of problems ahead and signs giving you directions.
LOOK AHEAD: In order to avoid last-minute braking or the need to turn abruptly, you should look down the road at least 10 seconds ahead of your vehicle (City - one block, Open road - one half a mile). By looking well ahead and being ready to stop or change lanes if needed, you can drive more safely, save on fuel, and help keep traffic moving at a steady pace.
LOOK TO THE SIDES: As other vehicles or pedestrians may cross or enter your path at anytime, you should look to both sides to watch for potential trouble.
LOOK BEHIND: You must check traffic behind you. This is the only way to know if someone is following too closely or coming up too fast, and it will give you time to do something about it. You need to check more often when traffic is heavy. It is very important to look behind you when you change lanes, slow down, back up, or are driving down a long or steep hill.