Iowa Driver's License Test Vehicle Safety and Equipment 2

Question 1

What tire tread depth does Iowa consider the minimum safe level?

Accepted Answer

2/32 inch

Answer

1/32 inch

Answer

4/32 inch

Answer

6/32 inch

Question 2

When is it required to use hazard lights (four-way flashers) in Iowa?

Accepted Answer

When stopped on the road or shoulder creating a hazard

Answer

When driving slowly on any road

Answer

To thank other drivers for yielding

Answer

When driving in rain

Question 3

How often does Iowa recommend checking tire pressure?

Accepted Answer

At least once a month and before long trips

Answer

Once a year before winter

Answer

Only when a low-pressure warning light appears

Answer

Every 10,000 miles

Question 4

What does Iowa law require regarding vehicle lighting at night?

Accepted Answer

Headlights, taillights, and brake lights must all be functional

Answer

Only headlights are required

Answer

Headlights only on unlit roads

Answer

Interior lights must be on

Question 5

What does Iowa require for vehicle mirrors?

Accepted Answer

Rearview mirror plus at least one exterior mirror

Answer

Only a driver-side mirror is required

Answer

A rearview mirror only

Answer

Three mirrors — left, right, and center

Question 6

Under Iowa law, what must you do if your vehicle's muffler fails?

Accepted Answer

You must repair or replace it to meet noise requirements

Answer

You may continue driving as long as no one complains

Answer

You must display a noisy vehicle warning sign

Answer

Muffler condition is not regulated in Iowa