Are double trailers allowed in the UK?

Double Trailers in the UK: Length Restrictions and Special Exceptions

In the United Kingdom, the use of double trailers is permitted but subject to certain length restrictions. Generally, each trailer in a double trailer configuration cannot exceed 28 feet in length. This is to ensure road safety and maneuverability within urban environments.

Length Restrictions for Double Trailers

• Each trailer: Maximum length of 28 feet
• Total length of double trailer: Not specified

Exceptions to Length Restrictions

There are a few specialized configurations of double trailers that are exempt from the 28-foot length restriction:

• Turnpike Double: Consists of two trailers each not exceeding 32 feet in length. The total length of the double trailer must not exceed 65 feet. This configuration is commonly used for transporting automobiles.
• Rocky Mountain Double: Consists of two trailers, one of which is not exceeding 30 feet in length and the other not exceeding 28 feet in length. The total length of the double trailer must not exceed 65 feet. This configuration is designed for use in mountainous regions.

Purpose of Length Restrictions

The length restrictions for double trailers in the UK serve several important purposes:

• Safety: Longer trailers can be more difficult to maneuver and control, especially on narrow roads or in tight spaces.
• Road Capacity: Limiting the length of double trailers helps to maintain traffic flow and avoid congestion.
• Urban Environment: Longer trailers may not be suitable for navigating through urban areas with narrow streets or limited turning areas.

By adhering to the length restrictions and using specialized configurations when necessary, double trailers can be operated safely and efficiently in the UK.