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Iowa driving lesson · Right-of-Way, School Buses & Parking

Right-of-way at intersections

A 3-minute lesson from the Iowa course. Read the rules and examples, follow the handbook page references, and check your understanding before you move on.

Read time
3 minutes
Course unit
Right-of-Way, School Buses & Parking
Checkpoint questions
6
Source pages
18, 19

Right-of-way rules say who must wait when paths cross and no sign or signal decides it. The law never GIVES anyone the right-of-way—it only says who must yield. Whoever is 'right,' do everything you can to avoid striking a pedestrian or another vehicle.

Know the rule

The law says who must yield the right-of-way; it does not give anyone the right-of-way.

Handbook p. 18 ↗

Know the rule

Bicyclists are very vulnerable in crashes. Be ready to yield to them even when they should yield to you—they have no defense against a vehicle.

Handbook p. 18 ↗

Right-of-way rules at intersections:

  • Right turn on red: permitted unless a sign prohibits it, but you must yield
  • Crossing a sidewalk or entering/exiting a driveway, alley, or parking lot: yield to pedestrians
  • Turning left: yield to oncoming cars going straight ahead
  • All-way stop: first to arrive goes first (after a complete stop); if tied, the vehicle on the right goes
  • Entering a road from a driveway, alley, or roadside: yield to vehicles already on the main road
  • Yield or stop for pedestrians in marked or unmarked crosswalks
Handbook p. 19 ↗

Know the rule

It is illegal to drive on a sidewalk except to cross it.

Handbook p. 19 ↗
Two-way stop right-of-way
Two-way stop: the red car turning left must yield to the green car going straight
Four-way stop right-of-way
All-way stop: arriving together, the car on the left yields to the car on the right
Yield sign intersection right-of-way
Yield signs: the red cars yield to cross traffic

Know the rule

At uncontrolled intersections (no stop sign or signal), all drivers must slow down and approach carefully. The same rules as at controlled intersections apply, with extra caution.

Handbook p. 19 ↗
Uncontrolled intersection right-of-way
Uncontrolled intersection: arriving at about the same time, the driver on the left yields to the driver on the right

Put it into practice

At a four-way stop you and a car on your right stop at the same moment. The car on your right goes first. Had you clearly arrived first, you would go first after your complete stop.

Put it into practice

You're pulling out of a parking lot across a sidewalk. Stop, yield to anyone walking on the sidewalk, then yield to vehicles already on the street.

Check your understanding

Read the question, decide on an answer, then open it to check the explanation. These are Roadwise study questions based on the source handbook.

Two vehicles arrive at an all-way stop at the same time. Who goes first?
  1. The vehicle to the left
  2. Whichever vehicle is larger
  3. The vehicle going straight
  4. The vehicle to the right

Answer: The vehicle to the right

When vehicles arrive at an all-way stop at the same time, the vehicle to the right goes first.

Handbook p. 19 ↗
You want to turn right on red after stopping. What must you do first?
  1. Yield to others first
  2. Wait for the light to turn green
  3. Wait for a green arrow
  4. Go; you have the right-of-way

Answer: Yield to others first

After stopping at a red light, you must yield before making a right turn on red.

Handbook p. 19 ↗
You are turning left at a green light as an oncoming car approaches, going straight. Who must yield?
  1. The driver going straight
  2. The driver turning left
  3. Whichever driver arrived first
  4. Neither driver needs to yield

Answer: The driver turning left

Drivers turning left must yield to oncoming vehicles going straight through the intersection.

Handbook p. 19 ↗
What does Iowa's right-of-way law actually determine?
  1. Exactly who is allowed to go first in every case
  2. Who must yield, not who has the right
  3. Only who is at fault after a crash
  4. Nothing; right-of-way is not defined by law

Answer: Who must yield, not who has the right

The manual clarifies that the law says who must yield the right-of-way; it does not give anyone the right-of-way.

Handbook p. 18 ↗
At an uncontrolled intersection with no signs or signals, the same right-of-way rules apply as at a controlled intersection.
  1. True
  2. False

Answer: True

The manual states the same right-of-way rules that apply at controlled intersections also apply at uncontrolled ones.

Handbook p. 19 ↗
Because bicyclists must yield to cars in some situations, drivers never need to slow down for them.
  1. True
  2. False

Answer: False

The manual says drivers should use defensive driving to avoid bicyclists, even when the bicyclist should technically yield.

Handbook p. 18 ↗
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