South Dakota CAR DMV Practice Test 15

Anytime you want to merge with other drivers, you need to find a gap large enough for you to safely enter into the flow of traffic. You should not stop on the entrance ramp to an interstate highway unless there are no gaps into which you may safely merge.

Drivers are responsible for making sure their vehicles do not become hazards after they have been parked. Wherever you park, make sure your car is visible to drivers approaching from any direction.

When broken yellow lines separate the lanes of traffic on a two-lane roadway, any driver may pass when there is no oncoming traffic.

You must drive more slowly than usual when there is heavy traffic or bad weather. However, if you block the normal and reasonable movement of traffic by driving too slowly, you may be cited.

Using a cell phone while driving is dangerous because it occupies the user's eyes, hands, and mind. Even the most skilled drivers increase their risk of being involved in a crash by using a cell phone on the road.

When driving in fog, you should slow down and use your low beam headlights. If the fog is so bad that you cannot see, pull off the road and wait for the fog to clear.

Where there are both solid and dashed yellow lines between lanes of traffic, only traffic directly next to the dashed line may cross the centerline to pass. Drivers next to the solid line may not pass.

Even when you signal, you should not assume that the space you want to occupy is free or that other drivers will give you the right-of-way.

To prevent yourself from becoming an aggressive driver, concentrate on driving and don't take the actions of other drivers personally. Be realistic about your travel time, drive within posted speed limits, and be forgiving of other drivers using the roadway.

Warning signs are usually yellow with black markings. They alert you to conditions that are immediately ahead. This sign warns that you are leaving a separated one-way highway and will soon be driving on a two-way highway.

When passing another vehicle, move back into your original lane only when you can see the passed vehicle’s headlights in your rearview mirror. This ensures that you will have enough room to safely pull back in front of the other vehicle.

A number of drugs can impair your ability to drive, including depressant medications like tranquilizers and sedatives; over-the-counter cough syrups, cold tablets, and allergy medications (which may contain impairing substances like alcohol, codeine, or antihistamines); and illegal drugs.

Pennant-shaped yellow signs like this are used to indicate a no passing zone.

It is important that you are able to see clearly through all of your vehicle's windows, including the windshield. Remove all snow, ice, and frost from your vehicle's windows and mirrors before you start to drive.

Orange is the standard color for work zone activity. If you see orange signs, cones, or barrels while driving, stay alert and be prepared for unexpected driving conditions. This sign alerts drivers to an upcoming flagger whose directions should be obeyed by all drivers.

If an oncoming driver fails to dim their headlights, look toward the right side of the road. This will keep you from being blinded by the other vehicle’s headlights and allow you to see enough of the road to stay on course. Do not try to retaliate by keeping your bright lights on.

Before you return to the driving lane when completing a pass, be sure there is a safe gap between your vehicle and the passed vehicle. When you can see both headlights of the vehicle in your rearview mirror, it is safe to return to the driving lane.

Headlights must be used from one half hour after sunset until one half hour before sunrise. They must also be used at any other time when visibility is less than 200 feet.

Warning signs provide notice to road users of a situation that might not be readily apparent and are usually yellow with black markings. This sign warns drivers to be careful when driving under wet conditions as the pavement will become slippery and more difficult to navigate safely.

Being under the influence of alcohol affects your judgment. Good judgement is necessary to react appropriately to things that you see or hear while on the road. Even if you are below the legal blood alcohol limit, consuming any amount of alcohol is likely to affect your ability to drive safely.

Blood alcohol concentration (BAC) is a measurement of the percentage of alcohol in the blood. The higher the BAC number, the more impaired a person is.

If you approach a stopped school bus that has its lights flashing and arm extended, you must come to a full stop and remain stopped until the signal arm is pulled back and the bus resumes motion. This law applies whether you are traveling in the same direction as the bus or if you are approaching from the opposite side of the street.

Drivers turning left must yield to oncoming vehicles that are driving straight ahead. A turning driver may only proceed when they can safely turn without affecting oncoming traffic.

When turning left from a one-way street onto another one-way street, you should begin the turn from the far left lane.

Bicycles do not have turn signals so bicyclists use hand and arm signals to alert other drivers to their intentions. If a bicyclist puts their left arm straight out, they are signaling that they intend to turn left.