Vital Washington DC Trailer Laws & Regulations

When it comes to Washington DC trailer laws and regulations, there are a few things that everyone should know. For starters, trailers are classified as either recreational or commercial vehicles. There are also different rules and regulations for each type of trailer.

Do I Need To Register My Trailer In Washington?

You must have a certificate of title for your trailer if it is registered in Washington. This rule applies to trailers of all sizes. For information on the "rules of the road" when operating a vehicle with a trailer, please consult RCW Title 46 Chapter 46.61.

Do you need a bill of sale for a trailer in Washington? The Department of Motor Vehicles requires a bill of sale in order to register a trailer. The seller's signature must be on the bill of sale for it to be valid. Can you handwrite a bill of sale in Washington? Although the digital bill of sales is becoming more common, you can also opt to create a handwritten agreement on paper. Ultimately, what matters most is that all the relevant details are included in order to safeguard both parties involved.

Can you live in a trailer in Washington? Living in a trailer all year round is unfortunately not allowed in Washington State. The rule is that you can only stay for 180 days maximum at any RV park before moving to another spot.

Washington DC Trailer Laws & Regulations


The total length is 55 feet, the trailer length is not specified, the width is not available, and the height is 13 feet 6 inches.


All vehicles' brakes, with the exception of trailers not exceeding 3,000 lbs., must be utilized so long as the total weight on and including the wheels of the said trailer does not exceed 40% of the GVW of the towing vehicle. This is necessary in order to meet state requirements for stopping distance.

Any trailer weighing more than 3,000 pounds must be equipped with brakes that engage all wheels immediately upon breakaway from the towing vehicle and remain engaged for at least 15 minutes.

A person seated in the driving seat shall be able to control the brake application and release with a readily operable device.

Hitch and Signals

Every time a vehicle is towed using a hitch, safety chains must also be employed to secure the vehicle.


You must be able to see 200 feet behind you.


All trailers are held to the same headlamp and tail lamp requirements as other motor vehicles. any trailer 3,000 lbs or lower must have at LEAST 2 rear reflectors visible at all times, as well as 2 stop lights if the one on the towing vehicle is not visible.

All trailers and semitrailers weighing more than 3,000 pounds must have two front clearance lamps, two side marker lamps on each side, two rear clearance lamps, two reflectors, and two stop lights.

All trailers that exceed 3,000 pounds must have 1 side marker light and 1 clearance light on each side, as well as 2 reflectors in the back.

Speed Limits

As posted.

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