Traffic Laws and Regulations Flashcards

In Pennsylvania, what is the minimum following distance recommended when driving behind a large truck at highway speeds?

Answer: 4 seconds

Drivers are advised to maintain at least 4 seconds of following distance behind large trucks due to their extended stopping distances.

What must a Pennsylvania driver do when approaching a stopped school bus with flashing red lights on a two-lane road?

Answer: Stop at least 10 feet away and wait until lights stop flashing

Drivers must stop at least 10 feet from a school bus with flashing red lights and wait until the lights stop and the bus moves.

In Pennsylvania, it is illegal to drive in the left lane of a multi-lane highway when:

Answer: Other vehicles are traveling faster behind you

Pennsylvania's Keep Right law requires slower drivers to move out of the left lane when other vehicles are traveling behind them.

What does a yellow diamond-shaped sign with a truck symbol on a downgrade indicate?

Answer: Steep downgrade — trucks use lower gear

A yellow diamond truck-on-downgrade sign warns truck drivers to use a lower gear to control speed on a steep hill.

In Pennsylvania, which of the following is true about making a right turn at a red light?

Answer: It is permitted after a complete stop unless a sign prohibits it

Pennsylvania allows right turns on red after a complete stop, unless a sign specifically prohibits it.

When a Pennsylvania road has no posted speed limit in a business district, the default speed limit is:

Answer: 35 mph

Pennsylvania's default speed limit in business districts is 35 mph when no other limit is posted.

A driver in Pennsylvania must dim their high-beam headlights when within how many feet of an oncoming vehicle?

Answer: 500 feet

Pennsylvania law requires drivers to switch from high beams to low beams within 500 feet of an oncoming vehicle.