Equipment and conduct — Maryland Permit Test

Aggressive driving — committing a combination of violations such as speeding, tailgating, improper lane changes, and running signals — is illegal.

Racing or speed contests on any highway are illegal.

Backing up is prohibited on the roadway or shoulder of a controlled-access highway.

Drivers may not wear headphones, earphones, or earplugs in or over both ears while driving.

Both ears covered removes the sirens, horns and engine noise that warn you about what you cannot see.

Before leaving a vehicle unattended, the driver must stop the engine, remove the key, and set the parking brake.

A running car with the key in it can be driven off by anyone, and one left out of gear with the brake off can roll away on its own.

Throwing litter or any material from a vehicle onto a highway is illegal.

A reflective orange triangle on the rear of a vehicle marks a slow-moving vehicle traveling 25 mph or less, such as farm equipment.

The triangle marks a vehicle that may be doing 15 mph on a road where you are doing 55 — the closing speed is the danger.

While driving, wearing headphones or earplugs is...

prohibited in or over both ears. Both ears covered removes the sirens, horns and engine noise that warn you about what you cannot see.