Warning signs are normally diamond-shaped and yellow, although orange warning signs are used in work areas. Such signs warn that you are approaching a hazardous location or an area where special rules apply.

Even if you are using the substance legally, operating a vehicle while under the influence of marijuana is not legal. Doing so can be dangerous because the substance can distort your perception of space, time, and speed.

When parking facing uphill on a street that has a curb, set your parking brake and turn your steering wheel away from the curb. This way, if your vehicle starts to roll, it will roll into the curb.

Distractions cause drivers to react more slowly to traffic and hazards on the roadway. Distracted driving is never safe.

You should turn your head to check your blind spots before every lane change.

If you operate a motor vehicle registered in Washington State, you must have liability insurance and carry proof that you have such insurance.

A steady red traffic light indicates that drivers must come to a complete stop. Driving through a red light is against the law and is extremely dangerous. Drivers may turn right on a steady red light if there is no sign prohibiting a turn on red.

You must approach all railroad crossings with extreme caution and cross only when you know that no train is coming from either direction. If there is a flagger at a crossing, you must obey all of their instructions.

Consuming any type of alcohol can have negative effects on your reflexes and judgment. It does not matter which type of alcohol is consumed, only how much alcohol has entered a person's bloodstream.

After an accident, do not move the injured unnecessarily. Unskilled handling can make serious injuries out of minor ones. Keep the injured warm until skilled help arrives. If there is severe bleeding, attempt to stop the flow of blood with direct pressure.

If you are stopped at a railroad crossing with more than one track, do not start moving as soon as a train passes. Wait until you have a clear view down all tracks before you start across. Even where there is only one track, do not start across immediately after a train passes; check again for another train that may be approaching.

The exhaust system helps remove toxic gases, reduce the noise, and cool the hot gases coming from a running engine. Fumes from a leaky exhaust system can cause death in a very short time. They can also make you drowsy while driving.

When riding at night, the bicycle must have a white headlight visible for 500 feet and a red reflector visible for 600 feet to the rear. A flashing taillight or a steady red taillight may be used in addition to the red reflector.

If a green arrow is shown with a red light, you can only drive in the direction of the arrow and only if the intersection is clear.

After finding a parking space, checking traffic, and signaling, you should stop parallel to the vehicle directly ahead of your desired parking space before turning your wheel to park.

A flashing red traffic light means the same thing as a stop sign. You must come to a complete stop, yield to cross traffic and pedestrians, and then proceed when the way is clear.

To check your blind spot before changing lanes, you should look over your shoulder in the direction that you plan to move.

You must stop for a school bus that has its red lights flashing, whether it is the same or the opposite side of a two-lane road. You are not required to stop if the bus is on the opposite side of a road that has three or more marked traffic lanes, or that is divided by a median or physical barrier.

When on a roadway with two or more lanes, you should make room for entering vehicles. If there is no one driving next to you, move over one lane.

When parking on a street, it is prohibited to park more than 12 inches from a curb.

This sign indicates that right turns are prohibited.

If you follow too closely and the vehicle in front of you slows or stops suddenly, you may not have enough time to avoid a collision.

Drivers must always yield to pedestrians in the street, even if they are crossing against a red light or are otherwise being careless.

Double solid lines indicate that you may not pass or change lanes. You cannot cross the lines unless it is to turn left to enter or exit a highway, to turn into or from a driveway, or to make a U-turn (where permitted).

Do not stop at an accident scene unless you are involved or emergency help has not yet arrived. Keep your attention on your driving and keep moving, watching for people who might be on or near the road. Never drive to the scene of an accident, fire, or other disaster just to look.