Iowa Permit Test (Iowa DOT Knowledge Test) — All Questions

The 'basic speed law' means you must:

• a.Never drive faster than is safe for current conditions✓
• b.Always drive the posted maximum
• c.Match the speed of the fastest car
• d.Drive at least 10 mph under the limit

The basic speed law requires you to drive no faster than is reasonable and prudent for traffic, weather, and road conditions, even below the posted limit. (Iowa Driver's Manual, speed)

On a wet road, to reduce the chance of hydroplaning you should:

• a.Brake hard often
• b.Follow closely behind another car
• c.Increase your speed
• d.Slow down and avoid sudden steering or braking✓

Reduce speed on wet roads; hydroplaning happens when tires ride on a film of water, so avoid hard braking and sudden steering and ease off the gas if it occurs. (Iowa Driver's Manual, adverse conditions)

In fog, the safest choice is to:

• a.Turn off all lights
• b.Use high beams for more light
• c.Speed up to leave the fog
• d.Slow down and use low-beam headlights✓

In fog, slow down and use low beams; high beams reflect off the fog and reduce visibility further. (Iowa Driver's Manual)

When driving through a work zone you should:

• a.Keep your normal speed
• b.Follow the car ahead closely
• c.Obey posted work-zone limits and merge early✓
• d.Change lanes frequently

Slow to the posted work-zone speed, merge early, and watch for workers and equipment; fines are often higher in work zones. (Iowa Driver's Manual, work zones)