Oregon CAR DMV Practice Test 21

The only method that effectively reduces your BAC is to not drink alcohol for a period of time. Coffee, exercise, and cold showers cannot reduce your BAC or change the effects of alcohol. They can help you remain awake, but they cannot change your BAC or make you sober.

There are a number of locations where it is unlawful to park, including on a crosswalk or in a marked bicycle lane. When parking on the street, you must be within 12 inches of the side of the road.

When you see an emergency vehicle using its lights or hear it using its siren, you must immediately pull over to the curb or side of the road and stop.

A flashing yellow traffic light indicates that you should drive with caution.

Warning signs are used to warn drivers about upcoming hazardous conditions and are usually yellow with black markings. This sign tells drivers that they are approaching a school zone and that they should slow down and watch for children.

Warning signs prepare drivers for upcoming road conditions and hazards and are usually yellow with black markings. This sign warns drivers that they are approaching a T intersection and should prepare to turn either right or left.

When heavy rain reduces visibility, reduce your speed. Turn on your headlights so other drivers can see your vehicle. If the rain is so heavy that you are unable to see clearly, drive onto the shoulder and stop until the rain lets up.

Before passing, you must make sure the passing lane is clear and give the proper turn signal to show you are going to change lanes.

When approaching a stopped school bus that is using its stop signal, a driver is required to come to a complete stop. They should not proceed until the stop arm is withdrawn.

Pumping the brakes is generally the best way to stop a car in an emergency. The car will stop quickly and you will also be able to continue steering.

This sign indicates the presence of a pedestrian crossing. You should watch for people entering a crosswalk or crossing your path. Slow down and be prepared to stop.

Double solid yellow lines in the center of the road mean that passing is not allowed from either direction. You may not cross the lines unless you are making a left turn or passing pedestrians, bicyclists, and riders of scooters or skateboards when the opposite lane is clear and you can pass safely.

This sign indicates that a school crossing is ahead.

Many crashes are caused by drivers who are driving too fast for conditions. Always drive within the legal speed limits and decrease your speed any time conditions are less than perfect.

Develop a routine for entering and leaving your car. Before switching on the ignition, buckle your safety belt and see that all passengers do likewise.

If you are involved in a crash and do not have the proper insurance coverage, your license will be suspended for one year.

If oncoming drivers do not dim their headlights for you, keep your eyes on the right side of the road ahead. Do not look directly at the oncoming headlights because the glare may blind you for several seconds.

You must pull over to the right edge of the road and stop for an emergency vehicle with flashing lights, regardless of whether it is approaching you from behind or from the opposite direction.

Pedestrians should not enter a street or crosswalk when vehicles are approaching. Though pedestrians have the right-of-way in crosswalks, a vehicle approaching from a close distance may not have the time to stop before entering the crosswalk.

Other cars and motorcycles are often hidden in a vehicle’s blind spot, so be sure to glance over your shoulder before you begin a lane change. Begin signaling 100 feet before changing lanes or turning in a residential area. Signal five seconds in advance when changing lanes on a freeway.

A stop sign means that you must come to a full stop and yield the right-of-way to vehicles and pedestrians in or heading toward the intersection. Go again when it is safe.

Regulatory signs are white, rectangular signs with black markings. Drivers must obey the instructions posted on all regulatory signs. Where this sign is posted, it is prohibited for drivers to pass one another.

This sign means that a traffic signal is ahead. You should slow down and be prepared to stop.

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

Regulatory signs display laws that drivers must always obey. Right turns are not permitted where this sign is present.

Pennant-shaped signs usually indicate no passing zones. Text will also be on the sign to confirm that it is a no passing zone.

Drinking coffee will not reduce your blood alcohol concentration (BAC). While it may help you to stay awake, it cannot change your BAC or make you sober.

Your horn should be used as a warning in situations where you think another driver or a pedestrian does not see you. For example, if a child begins to run into the street in front of your vehicle, you should sound your horn.

When changing lanes or turning, signal your intentions well in advance. The law requires that you signal for at least 100 feet before you move your vehicle to the right or left. Before pulling away from a curb, always signal to inform passing drivers of your intentions.

Do not drive in someone else’s blind spot. Move forward or drop back so that the other driver can see you.

Regulation signs regulate traffic speed and movement, displaying rules which drivers must obey. This regulation sign means that left turns are prohibited.

Yellow centerlines are used to separate traffic moving in opposite directions. Broken lines may be crossed to pass slower-moving traffic when it is safe to do so.

A steady yellow traffic light indicates that the light will soon change to red. You should be prepared to stop for the red light, if it is safe to do so.

Signs providing information about destinations are green with white letters or symbols.

Safety belts can double your chance of surviving a crash and more than double your chance of avoiding serious injury. Airbags, when used properly with safety belts, provide additional protection in a front-end crash. You should wear both shoulder and lap belts.