http://www.legislation.gov.uk/uksi/2003/1998/article/19The Road Vehicles (Authorisation of Special Types) (General) Order 2003VehiclesRoad and pathway maintenanceWeight limitsSpeed limitsHedge cuttingROAD TRAFFICStatute Law Database2024-12-02Expert Participation2023-05-31 This Order makes provision authorising certain types of vehicles to be used on roads notwithstanding that they do not fully comply with the requirements that generally apply to vehicles permitted on roads. The Order specifies the requirements that must be met by vehicles seeking to rely on such authorisation. PART 3 19 1 The following are recognised categories of special vehicles— a agricultural motor vehicles; b agricultural trailers; c agricultural trailed appliances. 2 A vehicle that falls within any recognised category of special vehicles mentioned in paragraph (1) is referred to in this Order as a special type agricultural vehicle. 3 In this Order— “agricultural motor vehicle” means a motor vehicle (not being a dual purpose vehicle) which— is constructed or adapted for use off-road for the purpose of agriculture, horticulture or forestry; and is primarily used for one or more of those purposes; “agricultural trailer” has the same meaning as in the Construction and Use Regulations; and “agricultural trailed appliance” has the same meaning as in the Construction and Use Regulations. 4 In the definition of “agricultural motor vehicle” in paragraph (3), “dual purpose vehicle” has the same meaning as in the Construction and Use Regulations. Art. 19 in force at 25.8.2003, see art. 1(2)