Vehicle safety features — Louisiana Permit Test

Vehicle safety features on the Louisiana permit test — 6 rules, each with the reason behind it and a question on it while it is fresh.

The rules

Headrests protect people in the car from whiplash, so adjust yours before driving.

When you are hit from behind, your head snaps back. A headrest set at the right height stops it.

Headrests protect vehicle occupants from whiplash.

Class D & E Driver's Guide, p.42

Active safety means technology that helps prevent a crash.

Some parts of a car work to stop a crash from ever happening, like warnings and automatic brakes.

"Active safety" refers to technology assisting in the prevention of a crash and "passive safety" refers to components of the vehicle (primarily airbags, seatbelts and the physical structure of the vehicle) that help to protect occupants during a crash.

Class D & E Driver's Guide, p.42

Passive safety means the parts of a car, mainly air bags, seat belts and the car's body, that protect people during a crash.

Other parts do nothing until a crash happens, then soak up the hit and hold you in place.

"passive safety" refers to components of the vehicle (primarily airbags, seatbelts and the physical structure of the vehicle) that help to protect occupants during a crash.

Class D & E Driver's Guide, p.42

Crumple zones absorb the force of a collision and steer it away from the passenger compartment.

When the front of the car crushes, it uses up the crash force before it reaches the people inside.

Crumple zones absorb and dissipate the force of a collision, displacing and diverting it away from the passenger compartment and reducing the impact force on the vehicle occupants.

Class D & E Driver's Guide, p.43

Laminated windshields stay in one piece when struck, which keeps an unbelted rider's head from going through.

A windshield that holds together stops a person from being thrown through it, and you can still see out.

Laminated windshields remain in one piece when impacted,

Class D & E Driver's Guide, p.43

Tempered glass side and rear windows break into small granules with few sharp edges instead of jagged pieces.

Small dull bits of glass cause far fewer deep cuts than long sharp shards would.

Tempered glass side and rear windows break into granules with minimally sharp edges, rather than splintering into jagged fragments as ordinary glass does.

Class D & E Driver's Guide, p.43

On the test

What do headrests protect you from?

Whiplash. When you are hit from behind, your head snaps back. A headrest set at the right height stops it. Class D & E Driver's Guide, p.42: “Headrests protect vehicle occupants from whiplash.”

How this works

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Where these come from

Every rule here is checked against Class D & E Driver's Guide, published by the Louisiana Department of Public Safety, and against the state code itself. Last checked 2026-10-04.