Delaware Trailer Brake Laws 2026: Required Over 4,000 lb
Delaware Code states a trailer or semitrailer with load-and-vehicle gross weight over 4,000 lb may not operate over 10 mph unless it has suitable brakes controlled by the towing-vehicle operator.
Quick answer: 4,000 lb gross weight
In Delaware, trailer brakes are currently listed at 4,000 lb (gross weight). Delaware measures gross weight, so weigh the trailer as you actually tow it.
| Requirement | State rule | Applies when | Source | Last checked |
|---|---|---|---|---|
| Trailer brakes | 4,000 lb | gross weight | Verified | 2026-07-13 |
| Breakaway switch | Title 21 contains no breakaway provision. Instead the code forbids operating a trailer over 4,000 lb gross weight above 10 mph unless it has suitable brakes controlled by the operator of the towing vehicle. | Trailer type and weight may matter | 21 Del. C. 4305 | 2026-07-13 |
| Safety chains | Title 21 contains no safety-chain requirement. The towing statute only caps the drawbar or other connection at 15 feet and requires a 12-inch red flag when the connection is a chain, rope or cable. | Conventional trailer couplings | 21 Del. C. 4191(b) | 2026-07-13 |
| Speed / lane rule | The general speed statute has no towing category, but a separate section caps any trailer over 4,000 lb gross weight at 10 mph unless it has brakes controlled by the towing vehicle's operator. | Posted roads and vehicle combinations | 21 Del. C. 4169; 4305 | 2026-07-13 |
| Double towing | Needs verification with Delaware Code. | Multiple-trailer combinations | Verified | 2026-07-13 |
Official source links
Delaware Code states a trailer or semitrailer with load-and-vehicle gross weight over 4,000 lb may not operate over 10 mph unless it has suitable brakes controlled by the towing-vehicle operator.
How the 4,000 lb threshold applies to three trailers
Delaware measures gross weight, so the weight of the trailer as loaded is what counts.
| Example trailer | Weight checked | Against 4,000 lb |
|---|---|---|
| Small utility trailer | 2,200 lb | Under the Delaware threshold by 1,800 lb |
| Loaded just under the line | 3,900 lb | Inside the Delaware limit, but one heavy load away from crossing it |
| Mid-size travel trailer | 6,400 lb | Over the Delaware threshold by 2,400 lb â brakes required |
Delaware trailer equipment rules
Safety chains
Not required statewideTitle 21 contains no safety-chain requirement. The towing statute only caps the drawbar or other connection at 15 feet and requires a 12-inch red flag when the connection is a chain, rope or cable.
21 Del. C. 4191(b) âBreakaway system
Not required statewideTitle 21 contains no breakaway provision. Instead the code forbids operating a trailer over 4,000 lb gross weight above 10 mph unless it has suitable brakes controlled by the operator of the towing vehicle.
21 Del. C. 4305 âSpeed limit when towing
The general speed statute has no towing category, but a separate section caps any trailer over 4,000 lb gross weight at 10 mph unless it has brakes controlled by the towing vehicle's operator.
21 Del. C. 4169; 4305 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 Delaware
Needs verification with Delaware Code.
Speed and lane rules when towing in Delaware
Delaware source review found a 10 mph limit for trailers or semitrailers over 4,000 lb gross load-and-vehicle weight unless equipped with suitable brakes controlled by the towing-vehicle operator.
How Delaware compares with neighbouring states
3 of the 3 states bordering Delaware 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 Delaware |
|---|---|---|
| Maryland | 3,001 lb GVWR | 999 lb stricter |
| New Jersey | 3,000 lb GVWR | 1,000 lb stricter |
| Pennsylvania | 3,000 lb gross weight | 1,000 lb stricter |
Planning a multi-state trip? The route brake law checker compares every state on a route at once.
Related towing tools
Delaware towing law FAQ
Are trailer brakes required in Delaware?
Delaware currently lists a trailer brake threshold at 4,000 lb gross weight. Always verify the official state source before towing.
What weight requires trailer brakes in Delaware?
The current data lists 4,000 lb gross weight as the brake threshold.
Is a breakaway switch required in Delaware?
Title 21 contains no breakaway provision. Instead the code forbids operating a trailer over 4,000 lb gross weight above 10 mph unless it has suitable brakes controlled by the operator of the towing vehicle. (21 Del. C. 4305)
Are safety chains required in Delaware?
Title 21 contains no safety-chain requirement. The towing statute only caps the drawbar or other connection at 15 feet and requires a 12-inch red flag when the connection is a chain, rope or cable. (21 Del. C. 4191(b))
Can I tow two trailers in Delaware?
Needs verification with Delaware Code.
Is there a towing speed limit in Delaware?
The general speed statute has no towing category, but a separate section caps any trailer over 4,000 lb gross weight at 10 mph unless it has brakes controlled by the towing vehicle's operator. (21 Del. C. 4169; 4305)
Does Delaware measure trailer weight as GVWR or actual weight?
Delaware uses gross weight, so weigh the trailer as you actually tow it rather than reading the data plate.
Where can I verify Delaware towing laws?
Start with the 2 official sources linked on this page, beginning with 21 Del. C. Chapter 43 brake equipment. Prefer state DOT, DMV, legislature, or public-safety pages over summaries from private websites. This page was last checked on 2026-07-13.