Verified
Indiana Trailer Brake Laws 2026: Required Over 3,000 lb
Indiana Code 9-19-3-3 verifies the 3,000 lb gross-weight brake trigger, driver-cab application rule, and automatic breakaway language. The state code app is JavaScript-rendered, so the official link is paired with accessible section references.
- Brake threshold
- 3,000lbgross weight
- Breakaway switch
- Required
- Safety chains
- Required
- Towing speed
- Posted limits
- Double towing
- Not recorded
On this page8 sections
Quick answer: 3,000 lb gross weight
In Indiana, trailer brakes are currently listed at 3,000 lb (gross weight). Indiana measures gross weight, so weigh the trailer as you actually tow it.
Indiana trailer equipment rules
Breakaway switch
A trailer or semitrailer of at least 3,000 lb gross weight must have brakes applicable by the towing driver from the cab and designed so the brakes apply automatically in an accidental breakaway.
- Applies when
- Trailer type and weight may matter
- Source
- Ind. Code 9-19-3-3
- Last checked
- 2026-08-21
Safety chains
Each trailer must be attached by coupling devices preventing deflection of more than six inches from the towing vehicle's path, plus suitable safety chains or devices, one on each side of the coupling at the extreme outer edge, strong enough to haul the loaded trailer.
- Applies when
- Conventional trailer couplings
- Source
- Ind. Code 9-20-9-8(c)
- Last checked
- 2026-08-21
Speed / lane rule
No towing-specific speed limit; follow posted limits. The only weight-linked limits are 65 mph on rural interstates for a declared gross weight over 26,000 lb, and 55 mph for oversize vehicles.
- Applies when
- Posted roads and vehicle combinations
- Source
- Ind. Code 9-21-5-2
- Last checked
- 2026-08-21
Double towing
Needs verification with Indiana Code.
- 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 3,000 lb threshold applies to three trailers
Indiana measures gross weight, so the weight of the trailer as loaded is what counts.
| Example trailer | Weight checked | Against 3,000 lb |
|---|---|---|
| Small utility trailer | 1,650 lb | Under the Indiana threshold by 1,350 lb |
| Loaded just under the line | 2,900 lb | Inside the Indiana limit, but one heavy load away from crossing it |
| Mid-size travel trailer | 4,800 lb | Over the Indiana threshold by 1,800 lb — brakes required |
How Indiana compares with neighbouring states
None of the 4 states bordering Indiana set a stricter numeric brake threshold in this dataset, but bases and equipment rules still differ — check each state page before a trip.
| Bordering state | Brake threshold | Compared with Indiana |
|---|---|---|
| Illinois | 3,000 lb gross weight | Same threshold |
| Kentucky | verified stopping-distance performance rule | Different rule type — compare directly |
| Michigan | 3,000 lb gross weight | Same threshold |
| Ohio | verified trailer-type rule | Different rule type — compare directly |
Planning a multi-state trip? The route brake law checker compares every state on a route at once.
Official source links
Indiana towing law FAQ
Are trailer brakes required in Indiana?
Indiana currently lists a trailer brake threshold at 3,000 lb gross weight. Always verify the official state source before towing.
What weight requires trailer brakes in Indiana?
The current data lists 3,000 lb gross weight as the brake threshold.
Is a breakaway switch required in Indiana?
A trailer or semitrailer of at least 3,000 lb gross weight must have brakes applicable by the towing driver from the cab and designed so the brakes apply automatically in an accidental breakaway. (Ind. Code 9-19-3-3)
Are safety chains required in Indiana?
Each trailer must be attached by coupling devices preventing deflection of more than six inches from the towing vehicle's path, plus suitable safety chains or devices, one on each side of the coupling at the extreme outer edge, strong enough to haul the loaded trailer. (Ind. Code 9-20-9-8(c))
Can I tow two trailers in Indiana?
Needs verification with Indiana Code.
Is there a towing speed limit in Indiana?
No towing-specific speed limit; follow posted limits. The only weight-linked limits are 65 mph on rural interstates for a declared gross weight over 26,000 lb, and 55 mph for oversize vehicles. (Ind. Code 9-21-5-2)
Does Indiana measure trailer weight as GVWR or actual weight?
Indiana uses gross weight, so weigh the trailer as you actually tow it rather than reading the data plate.
Where can I verify Indiana towing laws?
Start with the 2 official sources linked on this page, beginning with Indiana Code 9-19-3-3 trailers and semitrailers. 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 Indiana sources linked above before towing.