The posted limit is 65 mph, but heavy rain has sharply reduced visibility and traction. What does Idaho's basic speed rule require?
Correct answer: A lower speed that is reasonable and prudent for the conditions.
A maximum limit does not replace judgment about visibility, surface conditions and hazards. Adjust speed so you can drive safely.
Source: Idaho Driver's Handbook, July 2026; printed/PDF p. 68 — Speed Limits — basic rule ↗
In a residential, business or urban district with no different posted limit, which maximum does the handbook state?
Correct answer: 35 mph.
The handbook states 35 mph unless otherwise posted. The basic rule still requires less when conditions make that necessary.
Source: Idaho Driver's Handbook, July 2026; printed/PDF p. 68 — Speed Limits — residential, business or urban district ↗
In ordinary good conditions, what minimum following interval does the handbook recommend behind another car?
Correct answer: At least three seconds.
Use a fixed roadside object to measure at least three seconds. This is a recommended minimum, not enough for every speed, vehicle or weather condition.
Source: Idaho Driver's Handbook, July 2026; printed/PDF p. 79 — Following Distances ↗
Rain becomes heavy while you follow another car at the usual minimum interval. What should change?
Correct answer: Increase the following interval substantially to provide an extra safety margin.
The handbook calls for increasing the three-second interval several times in bad weather. Reduced traction and visibility need more time and space.
Source: Idaho Driver's Handbook, July 2026; printed/PDF p. 80 — Following Distances — bad weather ↗
A car follows you too closely. Which response helps reduce the risk?
Correct answer: Ease your speed safely and let the driver pass when possible.
Avoid escalation. The handbook advises slowing and allowing the close-following vehicle to pass, while preserving safe control and space.
Source: Idaho Driver's Handbook, July 2026; printed/PDF p. 80 — Keep a Space Cushion ↗
You stop behind another vehicle. Which visual cue does the handbook recommend for a useful stopped gap?
Correct answer: Be able to see its rear tires where they touch the ground.
Seeing the rear tires at ground level helps leave room to maneuver around a stalled vehicle and may reduce a secondary impact if you are rear-ended.
Source: Idaho Driver's Handbook, July 2026; printed/PDF p. 71 — Stopping Behind a Vehicle ↗
Where should you direct part of your visual scan to anticipate developing hazards?
Correct answer: About ten to fifteen seconds ahead, while also checking sides and mirrors.
Look well ahead and keep the eyes moving. Early observation gives time to plan instead of making abrupt last-second decisions.
Source: Idaho Driver's Handbook, July 2026; printed/PDF p. 89 — Defensive Driving — Look Ahead ↗
You are very upset after an argument and cannot concentrate. What is the safer choice?
Correct answer: Let someone else drive or wait until you can pay attention safely.
Strong emotions can interfere with attention and judgment. The handbook advises letting someone else drive when upset.
Source: Idaho Driver's Handbook, July 2026; printed/PDF p. 88 — Your Mood Affects Your Driving ↗
Your eyes feel heavy during a long highway drive. What should you do?
Correct answer: Leave the highway at a safe rest or service area and rest.
Stop driving when drowsy. A safe stop and rest address the danger; stimulants and temporary sensations are not reliable substitutes.
Source: Idaho Driver's Handbook, July 2026; printed/PDF p. 93 — Fatigue and Highway Hypnosis ↗
You will drive alone to an unfamiliar destination. What should you do before departure?
Correct answer: Learn or set up the route before driving so you do not need to handle navigation tasks in motion.
Prepare before moving. The handbook recommends knowing the route and using a passenger to help with navigation when one is available.
Source: Idaho Driver's Handbook, July 2026; printed/PDF p. 92 — Ways to Keep From Getting Distracted ↗
You enter a school zone with an active posted reduced speed limit. Which speed rule applies?
Correct answer: Obey that posted limit and slow further if children or conditions require it.
Observe posted school-zone limits. Continue to apply the basic safe-speed rule rather than treating the posted maximum as a required speed.
Source: Idaho Driver's Handbook, July 2026; printed/PDF p. 69 — Speed Limits — school zones and work zones ↗
