Practice Online: Massachusetts Driver's Tests 2020

Warning signs are usually diamond-shaped with black markings on a yellow background. They alert drivers to upcoming hazards. This sign warns drivers that the right lane is ending or that the road is narrowing ahead.

If you must drive in foggy conditions, you should use your low beam headlights, as well as your fog lights, if your vehicle has them. High beams direct their light upwards, where it can bounce off the fog and into your eyes, reducing visibility even more.

If their vehicle loses traction on a slippery road, a driver with an Anti-Lock Braking System (ABS) needs to press down hard on the brake pedal, hold it, and steer out of danger. In an emergency situation, the ABS automatically pumps the brakes at a faster rate than the driver could. Removing steady pressure from the brake pedal or pumping the brakes will disengage the ABS.

If you are involved in a crash, move your vehicle off of the road and stop, if possible. If anyone is injured, call 911 and provide appropriate help. You must report the crash to law enforcement if there is an injury, a death, and/or more than $1,000 in property damage (or more than $200 worth of damage made to non-vehicle government property, such as signs or guardrails).

If you are being tailgated by another driver and there is a right lane, move over to the right. If there is no right lane, wait until the road ahead is clear and then reduce your speed slowly. This will encourage the tailgater to drive around you. Never slow down abruptly as this will only increase the risk of your vehicle being hit from behind.

White lines are used to separate traffic moving in the same direction. Solid lines indicate that drivers are not permitted to pass.