Alaska's maximum speed limit is 65 mph, posted on freeway-standard sections of the Glenn, Seward and Parks highways, with 55 mph the default on other open highways.
Alaska speed limits at a glance
| Road type | Limit |
|---|---|
| Cities, towns, business districts | 25 mph (40 kph) |
| Residential / school zones | 25 mph (40 kph) |
| Rural highways | 55 mph (89 kph) |
| Interstates / freeways | 65 mph (105 kph) |
About speed limits in Alaska
Alaska caps speeds at 65 mph, one of the lowest maximums in the western US, posted on the Glenn Highway freeway between Anchorage and Wasilla and on rural stretches of the Seward, Parks and Sterling highways. The statewide default for open highways outside towns is 55 mph, and much of the highway network stays at 55 because of curves, grades, frost heaves and wildlife crossings. Alaska technically has interstate-designated routes, but none are posted above 65 mph. Winter conditions matter as much as signs here: state law requires reducing speed for ice, snow and limited visibility, and troopers cite drivers under the basic-speed principle when they drive the posted limit in poor conditions.
Alaska designates several crash-prone routes as traffic safety corridors, including the Seward Highway between Anchorage and Girdwood, where all traffic fines double. Moose and other wildlife on the roadway are a genuine speed hazard, especially in winter darkness, and the long rural distances mean the Glenn and Parks highways see some of the state's fastest average speeds — Anchorage police have measured typical Glenn Highway traffic running about 10 mph over the posted 65.
Inside cities and towns the defaults are 25 mph on residential streets, 20 mph in business districts and 15 mph in alleys. School zones drop to 20 mph, and Anchorage posts many arterials between 35 and 45 mph. Unpaved local roads are commonly signed at 35 mph or lower.
Alaska does not operate speed cameras. Anchorage briefly ran a photo-radar program in the mid-1990s, but voters repealed it and no automated speed enforcement has returned since. Enforcement is entirely officer-based, with Alaska State Troopers covering the highway system and periodic high-visibility patrols on the Seward and Glenn corridors.
Enforcement
Enforcement is handled by Alaska State Troopers and local police using radar and lidar patrols, concentrated on the Glenn, Seward and Parks highways. There is no automated camera enforcement anywhere in the state.
Tolerance
Patrols on the Glenn Highway routinely observe traffic flowing near 75 mph in the 65 zone, but troopers can and do stop drivers at much smaller margins, particularly in the double-fine Seward Highway safety corridor and in work zones.
Speeding fines in Alaska
Basic speeding fines in Alaska run up to $300 depending on how far over the limit you are, and fines double in work zones and designated traffic safety corridors. Extreme speeds can draw reckless-driving charges, and speeding convictions add 2 to 6 points toward the 12-point license suspension threshold.
Frequently asked questions
What is the maximum speed limit in Alaska?
The maximum is 65 mph, posted on freeway-standard parts of the Glenn Highway and on rural sections of the Seward, Parks and Sterling highways. Most other open highways default to 55 mph, and no road in Alaska is posted above 65.
Why are Alaska's speed limits lower than other western states?
Terrain, weather and wildlife. Frost heaves, ice, long winter darkness and frequent moose crossings make higher limits impractical, and several crash-prone routes like the Seward Highway are designated traffic safety corridors where fines double.
What is the residential speed limit in Alaska?
Residential streets default to 25 mph, business districts to 20 mph and alleys to 15 mph. School zones are 20 mph, and cities like Anchorage post arterials at 35 to 45 mph.
Does Alaska use speed cameras?
No. Anchorage experimented with photo radar in the 1990s, but voters repealed the program and Alaska has had no automated speed enforcement since. All speeding tickets come from trooper or police patrols.
Speed limits in nearby states
- Washington speed limit — interstate, rural highway, and city limits.
- Oregon speed limit — interstate, rural highway, and city limits.
- California speed limit — interstate, rural highway, and city limits.
Related tools
- Convert MPH to KPH — convert any speed reading between units.
- Car speed test — verify your speedometer accuracy.
- Live GPS speedometer — see your actual speed in the browser.
- Stopping distance calculator — how far you need to brake from each speed.
- US speed limits overview — federal background and national patterns.