South Dakota Free Test 2

This sign warns that the bridge ahead is narrower than the approaching road.

The distance it takes to stop a vehicle increases exponentially as its speed increases, due to both longer reaction time and braking distance.

Blood Alcohol Concentration (BAC) is the standard scientific measurement of the amount of alcohol present in a person's bloodstream.

This sign indicates a center lane that is reserved for making left turns by traffic traveling in either direction.

Because small children can be difficult to see behind a vehicle using only mirrors, it is safest to physically get out of the car and check the area before backing up.

The shape of a route sign helps identify the type of road, such as an interstate (shield), U.S. highway (shield), or state highway (often a unique shape for the state).

This sign warns that you are approaching a school zone; slow down, watch for children, and obey any posted school speed limits.

A person's Blood Alcohol Content (BAC) is primarily determined by their body weight, the amount of alcohol they drink, and the time period over which they consume it.

Before entering an intersection, you should scan by looking left, then right, and then left again, as traffic from the left is the first you will encounter.

As you approach the crest of a hill, your visibility of the road ahead is limited, so you should reduce your speed and be prepared to stop for any hidden hazards.

If your vehicle goes into deep water, you must act quickly to unbuckle your seatbelt and exit through an open window before the vehicle sinks and water pressure prevents the doors from opening.

Drowsy driving is characterized by symptoms such as persistent yawning, difficulty focusing, and memory lapses, such as not recalling the last few miles driven.

If you accidentally take the wrong expressway exit, do not stop or reverse; continue to the next exit and use signs to find your way back to your intended route.

To ensure a lane change is safe, you must physically turn your head and look over your shoulder to check the blind spot in the direction you plan to move.

This is a service sign indicating that a hospital is nearby; follow the sign to reach the facility.

Regulatory signs, which inform you of laws such as speed limits or parking rules, are typically vertical rectangles with black lettering on a white background.

At an all-way stop, the right-of-way is given to the driver who arrived at the intersection first.

When merging onto an interstate, you should use the acceleration lane to match the speed of traffic, find a safe gap, and then merge smoothly into the lane.

When driving in fog, you should always use your low beam headlights, as high beams will reflect off the fog and create glare, reducing your visibility even further.

This sign warns of a pedestrian crossing ahead; be prepared to slow down or stop for people crossing the street.

This sign warns of a winding road ahead with multiple curves; slow down and stay in your lane.

A flashing red traffic light has the same meaning as a stop sign: you must come to a complete stop and proceed only when the way is clear.

Signs with a green background and white letters are guide signs that provide directional information, such as distances to upcoming destinations.

To enter an interstate, use the on-ramp and acceleration lane to build up to the speed of traffic, signal, find a safe gap, and then merge into the travel lane.

Driving at an excessive speed reduces a driver's reaction time and dramatically increases the force of impact in a collision, raising the risk of serious injury or death.

This is a service sign indicating that telephone services are available ahead.

Pavement markings in the shape of arrows indicate which direction(s) of travel are permitted or required from a specific lane.

The round yellow sign with a black "RXR" is the advance warning sign placed ahead of a highway-rail intersection to alert drivers.

Drivers intending to turn left must yield the right-of-way to any vehicles approaching from the opposite direction that are proceeding straight or turning right.

This sign warns of a steep hill or downgrade ahead; be prepared to control your speed, possibly by shifting to a lower gear.