Verified
Texas Trailer Brake Laws 2026: Required Over 4,500 lb
Texas DPS and Transportation Code sources verify the 4,500 lb gross-weight brake exemption, automatic breakaway language for heavier trailers, and Transportation Code 545.410 safety-chain requirement.
- Brake threshold
- 4,500lbgross weight
- Breakaway switch
- Required
- Safety chains
- Required
- Towing speed
- Posted limits
- Double towing
- Not recorded
On this page8 sections
Quick answer: 4,500 lb gross weight
In Texas, trailer brakes are currently listed at 4,500 lb (gross weight). Texas measures gross weight, so weigh the trailer as you actually tow it.
Texas trailer equipment rules
Breakaway switch
A trailer, semitrailer or pole trailer with air or vacuum brakes, or a gross weight over 4,500 lb, must have brakes that apply promptly and automatically and remain applied at least 15 minutes in case of a breakaway from the towing vehicle.
- Applies when
- Trailer type and weight may matter
- Last checked
- 2026-08-21
Safety chains
An operator of a passenger car or light truck may not draw a trailer, house trailer or another motor vehicle unless safety chains of a type and attachment approved by DPS connect them. Agricultural trailers and units under the federal motor carrier safety regulations are exempt.
- Applies when
- Conventional trailer couplings
- Last checked
- 2026-08-21
Speed / lane rule
No towing-specific speed limit; follow posted limits. The prima facie limits — 70 mph on state and US-numbered highways outside urban districts, 60 mph on other rural highways — contain no separate category for vehicles towing trailers.
- Applies when
- Posted roads and vehicle combinations
- Last checked
- 2026-08-21
Double towing
Needs verification with Texas Transportation Code length and combination rules before relying on double towing status.
- Applies when
- Multiple-trailer combinations
- Source
- Verified
- Last checked
- 2026-07-13
Read against the linked sources on . Statutes change and enforcement varies by trailer type — confirm before you tow.
Check your setup
How the 4,500 lb threshold applies to three trailers
Texas measures gross weight, so the weight of the trailer as loaded is what counts.
| Example trailer | Weight checked | Against 4,500 lb |
|---|---|---|
| Small utility trailer | 2,500 lb | Under the Texas threshold by 2,000 lb |
| Loaded just under the line | 4,400 lb | Inside the Texas limit, but one heavy load away from crossing it |
| Mid-size travel trailer | 7,200 lb | Over the Texas threshold by 2,700 lb — brakes required |
How Texas compares with neighbouring states
4 of the 4 states bordering Texas set a stricter brake threshold, so a trailer that is legal here may need brakes as soon as you cross the line. Equip for the strictest state on your route.
| Bordering state | Brake threshold | Compared with Texas |
|---|---|---|
| Arkansas | 3,000 lb gross weight | 1,500 lb stricter |
| Louisiana | 3,000 lb gross weight | 1,500 lb stricter |
| New Mexico | 3,000 lb gross weight | 1,500 lb stricter |
| Oklahoma | 3,000 lb gross weight | 1,500 lb stricter |
Planning a multi-state trip? The route brake law checker compares every state on a route at once.
Official source links
- Texas DPS brakes required public-safety
- Texas Transportation Code 547.401-547.405 statute
- Texas Transportation Code 545.410 safety chains statute
- TxDOT dot
Texas towing law FAQ
Are trailer brakes required in Texas?
Texas currently lists a trailer brake threshold at 4,500 lb gross weight. Always verify the official state source before towing.
What weight requires trailer brakes in Texas?
The current data lists 4,500 lb gross weight as the brake threshold.
Is a breakaway switch required in Texas?
A trailer, semitrailer or pole trailer with air or vacuum brakes, or a gross weight over 4,500 lb, must have brakes that apply promptly and automatically and remain applied at least 15 minutes in case of a breakaway from the towing vehicle. (Tex. Transp. Code 547.405(d), (e))
Are safety chains required in Texas?
An operator of a passenger car or light truck may not draw a trailer, house trailer or another motor vehicle unless safety chains of a type and attachment approved by DPS connect them. Agricultural trailers and units under the federal motor carrier safety regulations are exempt. (Tex. Transp. Code 545.410)
Can I tow two trailers in Texas?
Needs verification with Texas Transportation Code length and combination rules before relying on double towing status.
Is there a towing speed limit in Texas?
No towing-specific speed limit; follow posted limits. The prima facie limits — 70 mph on state and US-numbered highways outside urban districts, 60 mph on other rural highways — contain no separate category for vehicles towing trailers. (Tex. Transp. Code 545.352)
Does Texas measure trailer weight as GVWR or actual weight?
Texas uses gross weight, so weigh the trailer as you actually tow it rather than reading the data plate.
Where can I verify Texas towing laws?
Start with the 4 official sources linked on this page, beginning with Texas DPS brakes required. Prefer state DOT, DMV, legislature, or public-safety pages over summaries from private websites. This page was last checked on 2026-07-13.
Disclaimer: educational summary, not legal advice. Statutes and enforcement practice change — verify the Texas sources linked above before towing.