In these Regulations—

• the “1970 Act” means the Chronically Sick and Disabled Persons Act 1970;

• the “1986 Regulations” means the Road Vehicles (Construction and Use) Regulations 19864;

• a “Class 1 invalid carriage” means an invalid carriage which is not mechanically propelled;

• a “Class 2 invalid carriage” means a mechanically propelled invalid carriage which is so constructed or adapted as to be incapable of exceeding a speed of 4 miles per hour on the level under its own power;

• a “Class 3 invalid carriage” means a mechanically propelled invalid carriage which is so constructed or adapted as to be capable of exceeding a speed of 4 miles per hour but incapable of exceeding a speed of 8 miles per hour on the level under its own power;

• “horn” has the meaning given by regulation 37(10)(a) of the 1986 Regulations;

• “reversing alarm” has the meaning given by regulation 37(10)(c) of the 1986 Regulations;

• “road” has the meaning given by section 142(1) of the Road Traffic Regulation Act 19845;

• “two-tone horn” has the meaning given by regulation 37(10)(d) of the 1986 Regulations.