Alaska Trailer Brake Laws 2026: Required Over 5,000 lb
Alaska source review verifies the 13 AAC 04.205 GVWR-based 5,000 lb brake trigger for towed vehicles. The official administrative-code page is title-level rather than a clean subsection permalink, so an accessible public mirror is retained for section text.
Quick answer: 5,000 lb GVWR
In Alaska, trailer brakes are currently listed at 5,000 lb (GVWR). Because Alaska reads GVWR, the number on the trailer data plate decides this â not what the trailer weighs on the day.
| Requirement | State rule | Applies when | Source | Last checked |
|---|---|---|---|---|
| Trailer brakes | 5,000 lb | GVWR | Verified | 2026-07-13 |
| Breakaway switch | No driver may tow a vehicle with a GVWR greater than 5,000 lb unless the towed vehicle has brakes and an operating breakaway system capable of applying all required brakes if it separates from the towing vehicle. | Trailer type and weight may matter | 13 AAC 04.205(d)(2) | 2026-07-13 |
| Safety chains | A towed vehicle must be coupled by safety chain, cable or equivalent in addition to the regular hitch, with no more slack than needed to turn, strong enough to retain control and keep the drawbar off the ground. Fifth-wheel and kingpin couplings are exempt. | Conventional trailer couplings | 13 AAC 04.275(a)-(b) | 2026-07-13 |
| Speed / lane rule | A 45 mph maximum applies to a vehicle towing a mobile home. There is no other towing-specific limit; the general maximum is 55 mph on other roadways unless otherwise posted. | Posted roads and vehicle combinations | 13 AAC 02.325(b); 13 AAC 02.275(b) | 2026-07-13 |
| Double towing | Alaska administrative-code summaries indicate towing more than one vehicle is restricted unless the towing vehicle is over 15,000 lb, has at least three axles, and has air brakes for towing and towed vehicles; verify the current official code before relying on this. | Multiple-trailer combinations | Verified | 2026-07-13 |
Official source links
Alaska source review verifies the 13 AAC 04.205 GVWR-based 5,000 lb brake trigger for towed vehicles. The official administrative-code page is title-level rather than a clean subsection permalink, so an accessible public mirror is retained for section text.
How the 5,000 lb threshold applies to three trailers
Alaska measures GVWR, so the rating stamped on the trailer data plate is what counts, whatever the trailer weighs today.
| Example trailer | Weight checked | Against 5,000 lb |
|---|---|---|
| Small utility trailer | 2,750 lb | Under the Alaska threshold by 2,250 lb |
| Loaded just under the line | 4,900 lb | Inside the Alaska limit, but one heavy load away from crossing it |
| Mid-size travel trailer | 8,000 lb | Over the Alaska threshold by 3,000 lb â brakes required |
Alaska trailer equipment rules
Safety chains
RequiredA towed vehicle must be coupled by safety chain, cable or equivalent in addition to the regular hitch, with no more slack than needed to turn, strong enough to retain control and keep the drawbar off the ground. Fifth-wheel and kingpin couplings are exempt.
13 AAC 04.275(a)-(b) âBreakaway system
RequiredNo driver may tow a vehicle with a GVWR greater than 5,000 lb unless the towed vehicle has brakes and an operating breakaway system capable of applying all required brakes if it separates from the towing vehicle.
13 AAC 04.205(d)(2) âSpeed limit when towing
A 45 mph maximum applies to a vehicle towing a mobile home. There is no other towing-specific limit; the general maximum is 55 mph on other roadways unless otherwise posted.
13 AAC 02.325(b); 13 AAC 02.275(b) âRead against the linked sources on . Statutes change and enforcement varies by trailer type â confirm before you tow.
Towing more than one trailer in Alaska
Alaska administrative-code summaries indicate towing more than one vehicle is restricted unless the towing vehicle is over 15,000 lb, has at least three axles, and has air brakes for towing and towed vehicles; verify the current official code before relying on this.
Speed and lane rules when towing in Alaska
Needs verification; follow posted limits and trailer tire ratings.
Related towing tools
Alaska towing law FAQ
Are trailer brakes required in Alaska?
Alaska currently lists a trailer brake threshold at 5,000 lb GVWR. Always verify the official state source before towing.
What weight requires trailer brakes in Alaska?
The current data lists 5,000 lb GVWR as the brake threshold.
Is a breakaway switch required in Alaska?
No driver may tow a vehicle with a GVWR greater than 5,000 lb unless the towed vehicle has brakes and an operating breakaway system capable of applying all required brakes if it separates from the towing vehicle. (13 AAC 04.205(d)(2))
Are safety chains required in Alaska?
A towed vehicle must be coupled by safety chain, cable or equivalent in addition to the regular hitch, with no more slack than needed to turn, strong enough to retain control and keep the drawbar off the ground. Fifth-wheel and kingpin couplings are exempt. (13 AAC 04.275(a)-(b))
Can I tow two trailers in Alaska?
Alaska administrative-code summaries indicate towing more than one vehicle is restricted unless the towing vehicle is over 15,000 lb, has at least three axles, and has air brakes for towing and towed vehicles; verify the current official code before relying on this.
Is there a towing speed limit in Alaska?
A 45 mph maximum applies to a vehicle towing a mobile home. There is no other towing-specific limit; the general maximum is 55 mph on other roadways unless otherwise posted. (13 AAC 02.325(b); 13 AAC 02.275(b))
Does Alaska measure trailer weight as GVWR or actual weight?
Alaska uses GVWR, so the rating on the trailer data plate decides the answer even if the trailer is loaded lighter that day.
Where can I verify Alaska towing laws?
Start with the 3 official sources linked on this page, beginning with 13 AAC 04.205 brakes. Prefer state DOT, DMV, legislature, or public-safety pages over summaries from private websites. This page was last checked on 2026-07-13.