A steady downward green arrow over a traffic lane means you may use the lane indicated.

Before changing lanes, you should always verify that there are no other vehicles in the lane you want to enter by checking your mirrors and looking over your shoulder in the direction you plan to move. You should signal every time you change lanes.

Highway markings provide information for drivers. Markings help drivers correctly position their vehicles on roadways, inform drivers of safe passing zones, and warn drivers about upcoming conditions.

This sign indicates that there is a flagger ahead controlling traffic in a construction area.

Wearing your seat belt is the single most effective thing you can do to reduce your risk of death or injury while driving.

An intersection with a non-functioning traffic signal should be treated as a four-way stop.

As a general rule, broken traffic lines may be crossed but solid lines may not. Solid yellow lines may be crossed only when the driver is making a turn.

This sign indicates that an intersection with a crossing road is ahead.

When turning, you should reduce to a speed that allows you to maintain control of your vehicle, stay in your lane, and react to unexpected situations.

Crashes often happen because one driver does something that other road users are not expecting. You should communicate with other motorists, bicyclists, and pedestrians by doing things like signaling when slowing down, stopping, or changing direction. Use your emergency signals or horn when appropriate.

The most important thing to remember about driving in curves is that your vehicle’s inertia may make it difficult to turn. To maintain control, it is essential that you slow down before entering the curve.

Look over your shoulder to check your blind spot every time you want to change your vehicle's position. If you are turning, changing lanes, or pulling toward or away from a curb, you should check your blind spots.

It is illegal in Pennsylvania for anyone under the age of 21 to buy or consume alcohol, have it in their possession, or have it in a vehicle that they are driving. Even if you are not driving, your driving privileges can be suspended if you are convicted of one of several alcohol-related offenses, including transporting alcohol.

If your vehicle's turn signals do not work, you should use hand signals to indicate when you intend to change direction.

You should pass a bicyclist the same way you would pass any other vehicle, but not so fast or close to them that you throw debris in their face or blow them around with the draft of air from your vehicle. Allow at least 3 feet of space between your side mirror and the bicyclist, or at least 5 feet on higher speed roads or when there is a group of bicyclists. Honking unnecessarily may startle riders and make them more likely to crash.

If another vehicle is approaching you head-on in your lane, you should first honk your horn to attract attention. If the other driver does not move over, try to escape to the right. If you swerve left and the other driver corrects at the last instant, you will still crash. If a collision is unavoidable, brake firmly and steadily. Every mile per hour you slow down will reduce the impact.

This sign indicates that the road ahead turns sharply to the right and then sharply to the left.

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.