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Back to Alaska

Alaska Road Rules

Alaska Driving Laws 2026: Speed Limits, DUI Rules and Road Test Requirements

What speed limits apply in Alaska when no sign is posted? The default is 55 mph on unpaved roads, 65 mph on paved highways, and 65 mph on rural interstates. Alaska has some of the strictest implied consent laws in the country, refusing a breath test results in automatic license revocation. The knowledge test covers Alaska-specific rules like mandatory headlights at all times on certain roads, moose crossing procedures, and the 0.08% BAC limit for adults.


Table of Contents

☰ TABLE OF CONTENTS

  1. Alaska Speed Limits
  2. Right-of-Way Rules in Alaska
  3. Intersection and Turn Laws in Alaska
  4. Alaska Lane Usage Rules
  5. Passing Laws in Alaska
  6. Following Distance in Alaska
  7. Alaska School Bus Laws
  8. DUI and Impaired Driving Laws in Alaska
  9. Alaska Seat Belt and Child Restraint Laws
  10. Parking Rules in Alaska
  11. Driving in Alaska Weather
  12. Alaska License Points and Suspensions
  13. Headlight Laws in Alaska
  14. Night Driving in Alaska
  15. Alaska Cell Phone and Distracted Driving Laws
  16. Railroad Crossings in Alaska
  17. Alaska Roundabout Rules

1. Speed Limits in Alaska

Alaska sets default speed limits by location type, no posted sign required for them to apply. Whether you are navigating a Juneau alley or a Kenai Peninsula highway, these statutory caps are the law under favorable conditions:

LocationDefault Speed Limit
Business districts20 mph unless otherwise posted
Residential districts25 mph unless otherwise posted
All other roads (no posted sign)55 mph; rural highways are posted, typically 55 to 65 mph
School zones and playground zones20 mph maximum unless a different limit is posted
Alleys15 mph

Key exam numbers to memorize: 15 mph in alleys, 20 mph in business districts and marked school zones, 25 mph in residential districts, 55 mph on all other roads unless posted otherwise. Suspension thresholds: 12 points in 12 months OR 18 points in 24 months.

Key test point: Speed limits are maximums under favorable conditions. Alaskas Speed Limitation Law requires you to reduce speed for traffic, road surface, width, and weather. Never drive faster than you can stop within the assured clear distance ahead.


2. Right-of-Way: Who Goes First

Right-of-way is yielded, never seized. Alaskas knowledge test hits these scenarios repeatedly. Heres exactly who goes first in every common situation:

4-Way Stop Sign, Alaska right-of-way rules
4-way stop (all arrive at once)
Driver to the right
4-Way Stop Sign, Alaska right-of-way rules
4-way stop (one arrives first)
Driver who arrived first
Roundabout Traffic Circle Sign, Alaska roundabout rules
Roundabout / traffic circle
Vehicles already inside the circle
Emergency Vehicle Warning Sign, Alaska school bus and emergency vehicle laws
Emergency vehicles (lights/siren)
Emergency vehicle, pull to the right and stop
Pedestrian Crosswalk Lines, Alaska pedestrian right-of-way
Pedestrians in crosswalk
Pedestrians always
T-Intersection Warning Sign, Alaska intersection right-of-way
T-intersection (no signs)
Through road traffic; drivers on the dead-end must yield
Yield Sign, Alaska right-of-way rules
Yield sign
Cross traffic and pedestrians always
Merging Traffic Warning Sign, Alaska merging and lane change rules
Merging onto a highway
Traffic already on the highway

3. Turns & Signal Laws

How far in advance must you signal a turn in Alaska, and when is a left turn on red actually legal? Know the exact signal distance and the one scenario where red-light left turns apply:

Right Turn Signal Arrow, Alaska turn signal laws
Right turn on red
Permitted after a full stop unless a sign prohibits it. Yield to pedestrians and cross traffic.
No Right Turn on Red Sign, Alaska red light turn rules
No right turn on red
When posted, you must wait for a green light before turning right.
No Left Turn on Red Sign, Alaska red light turn rules
Left turn on red
Only allowed from a one-way street onto another one-way street, after a full stop.
Turn Left Only Lane Sign, Alaska lane usage rules
Left turn from two-way street
Start from the left lane; end in the left lane of the cross street.
Turn Right Only Lane Sign, Alaska lane usage rules
Right turn
Stay as close to the right curb as possible; end in the right lane.
No U-Turn Sign, Alaska U-turn laws
U-turns
Legal where not prohibited by a sign; must not interfere with traffic. Illegal in business districts in Alaska unless at a designated intersection.

4. Lane Rules & Line Markings

What does a solid yellow line on your side actually mean, and how is the center turn lane different from a passing lane? These line-marking rules show up on the Alaska knowledge test every time.

Center Turn Lane Pavement Marking, Alaska center turn lane rules
Center turn lane (CTSL)
Used only to begin or complete a left turn; not for through travel or merging. You may travel no more than 300 feet in the CTSL.
Solid White Lane Line, Alaska lane marking rules
Solid white line
Do not cross; marks the edge of the road or a lane that should not be changed.
Double Solid Yellow Centerline, Alaska no-passing zone lane markings
Solid yellow line (your side)
No passing allowed.
Single Broken Yellow Centerline, Alaska passing zone lane markings
Broken yellow line
Passing allowed when safe.
Solid and Broken Yellow Centerline, Alaska passing lane markings
Solid + Broken yellow centerline
Passing allowed only on the broken-line side.

5. Passing Another Vehicle

On Alaskas long stretches of two-lane highway, passing is common, and dangerous when done wrong. Heres when it is illegal and what distances you must respect:

  • Only pass on the left, using the oncoming lane, when it is safe and legal.
  • Do not pass within 100 feet of an intersection, railroad crossing, bridge, or curve where your view is limited. Look for the No Passing Zone pennant sign.
  • The vehicle being passed must not speed up while you are overtaking.
  • Return to your lane before coming within 200 feet of oncoming traffic.
  • Never pass a stopped school bus with flashing red lights, this applies in both directions on undivided roads.
  • You may pass on the right only when the vehicle ahead is turning left and there is a usable lane to the right.

6. Following Distance

Alaska roads can go from dry pavement to black ice without warning. The 3-second rule is the minimum under normal conditions: pick a fixed point, watch the car ahead pass it, and make sure you do not reach it in under 3 seconds.

ConditionRecommended Following Distance
Normal conditions3 seconds
Rain or wet roads45 seconds
Following a large truck or motorcycle4 seconds minimum
Ice or snow810 seconds
At night or in fog4+ seconds

7. School Buses & Emergency Vehicles

Do you have to stop for a school bus on a divided road in Alaska, and what does the Move Over law require? Failing either of these on the road, or on the test, has serious consequences.

School Buses

School Bus Stop Arm, Alaska school bus stop arm law

  • When a school bus stops with flashing red lights and an extended stop arm, all traffic in both directions must stop on undivided roads.
  • On roads with a true median or physical barrier, only traffic behind the bus must stop, oncoming traffic may proceed.
  • A center turn lane does not count as a divider. On 4+ lane roads without a raised median or barrier, all directions must stop.
  • You must remain stopped until the red lights stop flashing and the stop arm is retracted.
  • Failure to stop for a school bus while loading or unloading: 6 points on your Alaska driving record.
  • Railroad crossings: School buses must stop at ALL railroad crossings, with or without passengers, even if no lights are flashing and no train is visible. This is a frequently tested rule.

Emergency Vehicles

  • When you see or hear an emergency vehicle (police, fire, ambulance) with lights or siren: pull to the right edge of the road and stop. Do not block intersections.
  • Move Over Law (Alaska AS 28.35.185): On multi-lane highways, move one lane away from a stopped emergency vehicle on the shoulder. If you cannot move over, reduce speed to at least 15 mph below the posted limit.

8. DUI Laws & BAC Limits in Alaska

Alaska has some of the toughest DUI enforcement in the country, almost 45% of all traffic deaths involve alcohol. Refusing a breath test does not help; under Alaskas implied consent law, refusal itself is a separate criminal charge.

RuleDetail
Legal BAC limit (adults 21+)0.08% Blood Alcohol Content (BAC)
Legal BAC limit (under 21)Any amount, Alaska prohibits persons under 21 from operating a vehicle after consuming alcohol in any quantity
Legal BAC limit (CDL holders)0.04% while operating a commercial vehicle
Implied consent lawBy driving in Alaska you consent to chemical breath testing. Refusal after lawful DUI arrest results in two separate charges, DUI and Refusal, no limited work-purpose driving available during revocation
DUI first offense, administrative revocation90-day license revocation; 1 year if previously convicted of DUI or Refusal
Open container lawIllegal to have an open alcoholic beverage in the passenger area of a vehicle
DrugsDriving under the influence of any impairing substance, including drugs, is a DUI offense in Alaska

9. Seat Belts & Child Seats

Alaska law is clear: every occupant in a motor vehicle must be buckled. The driver is responsible for anyone under 16, regardless of where they are sitting.

RuleDetail
Front seat belt requirementAll front-seat occupants must wear a seat belt, driver and passengers
Rear seat belt requirementAll rear-seat passengers must be buckled
Children under 6 or under 60 lbsMust be in an approved child safety seat
Children 58 and under 49"Must use a booster seat with a seat belt
Children 614 (not in safety/booster seat)Must be buckled with a seat belt
Who is liable, passengers under 15The driver is legally responsible and receives the fine if any passenger under 15 is unrestrained, regardless of who owns the vehicle
Who is liable, passengers 15+Adult passengers (15 and over) are individually responsible for their own seat belt, the driver is not cited for their violation
PenaltySeat belt fines and surcharges are set in Alaska law; everyone must be buckled and the driver is responsible for most minors, confirm exact amounts from the latest official material

10. Where You Cannot Park

How close can you park to a fire hydrant in Alaska, and what is the rule for your wheels on a hill? The specific distances below are tested on the DMV knowledge exam. You cannot park:

  • Within 15 feet of a fire hydrant
  • Within 20 feet of a crosswalk at an intersection
  • Within 30 feet of a stop sign, yield sign, or traffic signal
  • Within 50 feet of a railroad crossing
  • On a sidewalk, in front of a driveway, or on a bridge
  • In a no-parking zone or alongside a curb painted yellow or red
  • Double parking (alongside a vehicle already parked at the curb)
  • Headed downhill: turn wheels toward the curb. Headed uphill with a curb: turn wheels away from curb. Uphill without a curb: turn wheels toward the shoulder.

11. Driving in Bad Weather

Alaska winters are no joke, snow and ice routinely extend stopping distances by three to twelve times. Fairbanks sees extreme cold; Southcentral gets heavy snowfall; coastal areas deal with fog and rain year-round.

  • Headlights required in Alaska when visibility is reduced to 1,000 feet or less by fog, rain, snow, smoke, or dust, even during daytime.
  • In heavy fog, use low beams, high beams reflect off fog and reduce visibility.
  • If you start to hydroplane, ease off the gas gently. Do not brake hard or turn sharply.
  • In icy conditions, brake gently well in advance. On snow or ice it takes three to twelve times as much distance to stop as on dry pavement.
  • If your car goes into a skid, steer in the direction you want the front of the car to go. Do not overcorrect.
  • Never use cruise control on wet, icy, or slippery roads.

12. Points & License Suspensions

Alaskas point system targets problem drivers before they cause crashes. Points range from 2 to 10 per violation. Hit the threshold and your license is gone, no work-purpose exceptions.

Alaska Points SystemConsequence
12 points in 12 months or 18 points in 24 monthsMandatory suspension or revocation
ViolationPoints
Speeding 110 mph over limit3 points
Speeding 1120 mph over limit4 points
Speeding 21+ mph over limit5 points
Reckless driving8 points
Running a red light or stop sign3 points
Improper passing4 points
Following too closely3 points
At-fault accident4 points

Note: A Defensive Driver Course (DDC) may be completed once every 12 months for a point reduction credit.


13. Headlight Rules

Alaskas long winters mean extended darkness, the dimming thresholds are exact numbers the DMV tests on. Get the oncoming vs. following distances right:

RuleDetail
When to use headlights, darknessFrom hour after sunset to hour before sunrise
When to use headlights, daytimeAny time visibility is reduced to 1,000 feet or less by fog, rain, snow, smoke, or dust
Low beams in fogAlways use low beams in fog, high beams reflect and reduce your visibility further
High beams, when to useOn open roads with no oncoming traffic and no vehicle directly ahead; increases visibility up to 500 feet
Dim to low beams, oncoming trafficSwitch to low beams when within 500 feet of an oncoming vehicle
Dim to low beams, followingSwitch to low beams when within 300 feet of a vehicle you are following
Low beams in fogAlways use low beams in fog, high beams reflect off fog and reduce your visibility
Parking lights onlyNot a substitute for headlights, illegal to drive using parking lights only

Key test point: Oncoming = dim at 500 feet. Following = dim at 300 feet. Classic Alaska exam question, do not mix them up.


14. Night Driving

In Alaska, nighttime driving means more than turning on your headlights. Glare recovery from oncoming vehicles can leave you temporarily blind. Moose, caribou, and bears cross highways regularly, especially at dawn and dusk.

RuleDetail
Overdriving your headlightsNever drive so fast that you cannot stop within the distance your headlights illuminate, this is called overdriving your headlights and is a major cause of night crashes
Reduce speed at nightEven at the posted limit, reduced visibility means you need more time to react, slow down
Increase following distanceUse a minimum 4-second following distance at night instead of the standard 3 seconds
Watch for pedestrians & cyclistsThey are much harder to see at night, especially away from lit areas
Avoid looking directly at oncoming lightsLook toward the right edge of the road to avoid being blinded by oncoming high beams
Stay alert for wildlifeMoose, caribou, and other large animals frequently cross Alaska highways at dawn and dusk, a moose collision at highway speed is often fatal
Keep windshield cleanA dirty windshield causes glare at night and significantly reduces visibility

15. Cell Phones & Distracted Driving

Alaska prohibits texting while driving, and the DMV handbook is explicit: when you use a cell phone while driving, your number one responsibility is still the road.

RuleDetail
Texting while drivingIllegal, Alaska prohibits using a wireless device to write, send, or read texts or email while operating a motor vehicle
Handheld cell phone useAlways assess traffic before calling; use speed dial or hands-free; place calls when stopped if possible; avoid calls in bad weather
School zones, cell phonesAll handheld cell phone use is prohibited in active school zones regardless of driver age
Penalty, first offenseFine up to $250
Penalty, subsequent offensesFine up to $500
Other distractionsEating, grooming, adjusting GPS, or anything that takes your eyes off the road can be cited as inattentive driving
Hands-free useBluetooth and hands-free devices are legal and recommended for all drivers

Key test point: The Alaska DMV handbook is direct, your No. 1 responsibility when behind the wheel is driving. Distracted driving is a leading cause of crashes statewide.


16. Railroad Crossings

Alaskas rail network crosses public roads at hundreds of locations. A train at speed cannot stop in under a mile. Heres exactly what Alaska law requires at every crossing:

RuleDetail
When to stopStop when lights are flashing, gates are lowering or down, a train is visible or audible, or a flagman signals you to stop
How far back to stopAt least 15 feet from the nearest rail, never stop on the tracks
When to proceedOnly after the train has completely passed, lights have stopped flashing, and gates are fully raised
Multiple tracksAfter one train passes, check for a second train on adjacent tracks before proceeding
Never race a trainTrains cannot stop quickly, a freight train at 55 mph takes over a mile to stop. Never try to beat a train.
Stalled vehicle on tracksGet everyone out immediately and move away from the tracks at an angle in the direction the train is coming from
Parking near crossingsDo not park within 50 feet of a railroad crossing

Key test point: Never drive around or under a lowered crossing gate, it is illegal and extremely dangerous. Wait until gates are fully raised and all tracks are clear.


17. How to Drive a Roundabout

Roundabouts are growing across Alaskas urban corridors, Anchorage in particular has added them to improve flow. The single rule that trips up most test-takers: entering drivers always yield to those already inside.

RuleDetail
Who has right-of-wayVehicles already inside the roundabout always have right-of-way. Entering drivers must yield.
Direction of travelAlways travel counterclockwise (to the right) around the central island
Entering a roundaboutSlow down, yield to circulating traffic, and enter when there is a safe gap
Lane selection, single laneFollow the directional signs and road markings for your intended exit
Lane selection, multi-laneChoose your lane before entering based on your exit: right lane for right/straight exits, left lane for left turns or U-turns
Do not stop insideNever stop inside a roundabout unless to avoid a collision, keep moving at a slow, steady speed
Large vehiclesTrucks and buses may use the mountable apron (raised inner ring) to navigate, give them extra space
Pedestrians & cyclistsYield to pedestrians in crosswalks when entering and exiting. Watch for cyclists who may ride through the roundabout.

Key test point: The most common wrong answer on roundabout questions is thinking you have right-of-way when entering. You never do, yield to traffic already inside.


SOURCE:ALASKA DMV INSTRUCTION PERMIT
BY SHORO AI TECHNICAL TEAM | REVIEWED BY A USA CERTIFIED DRIVING INSTRUCTOR
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