Any person who opens, closes or otherwise operates or interferes with a relevant barrier without lawful excuse shall be guilty of an offence and liable, on summary conviction, to a fine not exceeding level 3 on the standard scale.

In subsection (1) a “relevant barrier” means any barrier lawfully placed in, on or over a highway by or on behalf of a traffic authority in London for the purpose of preventing or restricting the passage of vehicles or any class of vehicles into, out of or along a highway.