Idaho CAR DMV Practice Test 17

When making a left turn where there is approaching traffic, you must wait for the approaching traffic to go through before you turn. You may enter the intersection to prepare for your left turn if the light is green and no other vehicle ahead of you plans to make a left turn.

This is a "Keep right" sign. It indicates that a traffic island, median, or barrier is ahead and that drivers must keep to the right of it.

Idaho law requires you to drive at a speed that is reasonable and prudent at all times. Decrease your speed any time conditions are less than perfect for driving.

When entering a freeway, use the on-ramp to accelerate to the speed of freeway traffic so you can blend in smoothly and safely. Entering traffic must yield to traffic already on the freeway.

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.

Directions given by traffic officers take precedence over signs, signals, and pavement markings. People authorized to direct traffic include police officers, fire police, highway work area flag persons, and school crossing persons.

If there is no stop line or crosswalk, you should stop at the point nearest to the intersecting roadway where you can get a view of approaching traffic. You should not enter the intersecting roadway to gain a better view.

A green steady arrow means you may pass through the intersection in the direction that the arrow is pointing. Oncoming traffic is required to stop for turning traffic.

The ability to drive safely is dependent on the driver being in good physical condition. Driving can be impaired by alcohol, legal and illegal drugs, and being drowsy.

Warning signs prepare drivers for upcoming road conditions and hazards and are usually yellow with black markings. This sign tells drivers that there is an upcoming stop sign and that they should prepare to come to a complete stop before proceeding.

To turn left from multilane streets and highways, start from the left lane.

Drivers must be aware that large vehicles often travel at a speed slower than the posted speed limit, especially when driving on an incline, and should use caution when approaching a large vehicle from the rear. When on a hill with limited visibility, it is unlawful to pass another vehicle.

If you miss your exit, you should take the next exit. Do not stop or back up on the highway, swerve across multiple lanes to try to make the exit at the last second, or cross over the median to turn around. All of these maneuvers are illegal and extremely dangerous.

Regulatory signs require drivers to obey an indicated instruction. Failure to comply is subject to penalty.

If you drive past these signs, you are going the wrong way and are at risk of a head-on collision. You should cautiously turn around.

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.

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.

If you are involved in an accident, you must stop at or near the scene. Move your vehicle out of the way of traffic, if possible. Do not stand or walk in traffic lanes as you could be struck by another vehicle. Turn off the ignitions of wrecked vehicles.

Regulatory signs are often rectangular and white with black markings and are used to indicate what things a driver must or must not do in a designated area. They may display speed limits, prohibit passing or turning, or clarify any other driving regulation.

Regardless of standard speed limit maximums set by law, state and local authorities may adjust speed limits in specific areas by posting speed limit signs. When it is reasonable and prudent, follow the posted speed limit.

Use the entrance ramp to accelerate to the speed of freeway traffic and yield to traffic already using the freeway. Before entering traffic, use your mirrors and check your blind spots to verify that you have room to safely merge.

This triangular sign is a "Yield" sign. When you see this sign, you must slow down to check for traffic and yield the right-of-way to pedestrians and approaching cross traffic. Stop only if it is necessary to do so.

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.

Any eight-sided sign is a stop sign. At an intersection with a stop sign, you must stop completely and check for pedestrians and cross traffic in the intersection. Wait for the intersection to clear before proceeding.

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.

Always use the proper turn signal when changing lanes, pulling into or out of a parking space, or pulling into traffic from an alley or parking area. Communicate with other drivers on the road to help prevent accidents.

The faster you drive on a wet roadway, the less effective your tires will be at wiping the water from the road. If your speed becomes excessive enough, your tires will lose their grip on the road entirely and you will begin to hydroplane (that is, to slide down the road on a film of water).

Railroad crossings are always dangerous. Drivers should look and listen for an approaching train coming from either direction before proceeding across the tracks. Watch for signals indicating an approaching train and never proceed until you are certain it is safe to do so.

If your power steering stops working, additional effort will be required to maintain steering control. Reduce your speed and pull off the roadway to stop in a safe area.

If your vehicle goes into a skid, you should turn the steering wheel in the direction you want the vehicle to go. As soon as the vehicle begins to straighten out, turn the steering wheel back the other way.

Regulatory signs regulate the movement of traffic. They are usually white with black markings and must always be obeyed by motorists.

Yield to all vehicles or pedestrians working on highway construction projects. Drive with special caution through a work zone where workers are present.

The average person’s body will process about one alcoholic drink in one hour. However, many factors play a part in determining how impaired a person will become when consuming alcohol, including the amount of alcohol consumed, how fast it is consumed, and a person’s body weight, food intake, and general health.

Flashing red lights are used at dangerous intersections. Treat them like stop signs.

When changing lanes, you should check your vehicle's blind spots by looking over your shoulder in the direction that you want to move. Always check your mirrors and turn on your directional signal before beginning a lane change.

You must yield the right-of-way to any emergency vehicle that is using its siren or flashing lights.

Passing is prohibited within 100 feet of an intersection, unless otherwise indicated by traffic control devices. You may not pass on hills, in curves, or where other obstructions on two-lane roads would prevent you from seeing oncoming vehicles. Never pass a school bus that is stopped to load or unload passengers.

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.

You should use low beam headlights when driving in fog, rain, or snow.

When passing another vehicle on a two-lane roadway, you must return to the right side of the roadway when there is enough room between you and the vehicle you have passed.