Alaska Car / Permit practice
Alaska Car / Permit: Speed & Space Management practice test
Choosing a safe speed, keeping a space cushion, adjusting for weather and traffic, and understanding stopping distance.
Content reviewed against official driver handbooks · August 12, 2026
14 questions · pass with 11 correct. You get instant feedback and an explanation after every answer.
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12 sample Speed & Space Management questions with the correct answer, a short explanation, and the official handbook reference. Read through them, then take the quiz above.
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1. Where no other limit is posted, what maximum speed does Alaska law set for a business district?
Correct answer: 20 mph
Under favorable conditions and absent a posted sign, the limit through a business district is 20 mph, the same figure the law sets for a school zone.
Source: Alaska Driver Manual — Speed Laws
2. On an Alaska roadway that is not otherwise posted and does not fall into a listed district, what is the maximum lawful speed?
Correct answer: 55 mph
Any other roadway defaults to 55 mph under favorable conditions, though selected highways may carry posted signs of 65.
Source: Alaska Driver Manual — Speed Laws
3. What does Alaska law say about driving unusually slowly?
Correct answer: You may not drive so slowly that you hold back or block the normal flow of traffic
You may not creep along at a speed that holds back or blocks the normal, reasonable movement of traffic.
Source: Alaska Driver Manual — Speed Laws
4. Alaska's speed limitation law lists conditions that require a careful and prudent speed. Which set does the manual give?
Correct answer: Traffic, surface, width and weather
The four listed conditions are traffic that is heavy or slow, a surface that is rough, icy, wet or otherwise short on traction, a roadway width that shrinks your margin of safety, and weather that hurts sight distance and traction.
Source: Alaska Driver Manual — Speed Limitation Law
5. The Alaska manual recommends a four-second gap but notes a different figure set by regulation. What is the regulatory minimum?
Correct answer: Two seconds
While the manual's charts teach the four-second interval, state regulation sets two seconds as the minimum following interval.
Source: Alaska Driver Manual — How to Avoid Rear End Collisions
6. According to the Alaska manual, how does doubling your speed from 20 to 40 mph change your braking distance and force of impact?
Correct answer: They become four times greater
Many drivers assume both simply double. In fact the striking power and the braking distance each grow four times over when speed doubles from 20 to 40 mph.
Source: Alaska Driver Manual — Speed, Impact and Braking Distance
7. What does Alaska's assured clear distance requirement mean for a driver?
Correct answer: You may not go faster than will let you stop within the distance you can see is clear
You may not travel at a speed that would leave you unable to stop within the clear distance you can see ahead of you.
Source: Alaska Driver Manual — Speed Limitation Law
8. Absent a posted sign, what is the Alaska speed limit in an alley?
Correct answer: 15 mph
The statutory maximum for an alley is 15 mph, the lowest of the district limits the manual lists.
Source: Alaska Driver Manual — Speed Laws
9. What speed does Alaska law set for a residential district that carries no posted limit?
Correct answer: 25 mph
Residential districts default to 25 mph under favorable conditions unless local authorities or the state transportation department have changed it.
Source: Alaska Driver Manual — Speed Laws
10. How should you use the acceleration lane when joining an Alaska freeway?
Correct answer: Reach cruising speed there before merging into the traffic stream
Build up to cruising speed in the acceleration lane before you try to merge, and give way to traffic already on the freeway, stopping if you must while staying mindful of whoever is behind you.
Source: Alaska Driver Manual — Entering the Controlled Access Highway-Freeway
11. How does the Alaska manual describe reaction distance at 50 mph?
Correct answer: You cover roughly another 55 feet while reacting and moving your foot to the brake
Reacting to a situation and getting your foot onto the brake takes roughly three-quarters of a second, during which a vehicle at 50 mph covers another 55 feet, and stopping may take 160 feet or more after that.
Source: Alaska Driver Manual — Check Your Driving Habits
12. What is different about a traffic offense committed inside an Alaska traffic safety corridor?
Correct answer: The fine is doubled
Certain stretches of highway carry that designation to encourage safer driving, and fines for offenses inside them are doubled.
Source: Alaska Driver Manual — Speed Laws
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