1.

You may drive around or under a gate that is being lowered or raised at a railroad crossing:

As long as an approaching train is not too close.
If your vehicle can do so without damaging the gate.
If you first look carefully in both directions.
Under no circumstances.

2.

To ensure that your physical condition does not cause you to drive in an unsafe manner, you should:

Keep physically fit and have regular physical examinations.
Know the effect of any medicine on your driving ability.
Drive within your physical limitations.
All of the above.

3.

You may avoid the risks of alcohol-related crashes by:

Deciding before you start drinking that you are not going to drive.
Simply saying, "No thanks, I'm driving," if someone offers you a drink.
Calling a taxi.
Doing any of the above.

4.

Taking drugs along with alcohol:

Increases the risk of causing a crash.
Is no more dangerous than consuming alcohol by itself.
Lessens the effect of alcohol on your ability to drive.
Has no effect on your general driving ability.

5.

When you see this black and yellow sign, it means:

The road to the right is for one-way traffic only.
That due to upcoming roadwork, there is a detour to the right.
Slow down because the road ahead changes direction at an extreme angle.
There is a crossroad to your right.

6.

This sign means:

Colorado driver's examination

Wait, before you go