What endorsement is required in a registration card for a tractor constituting a part of trackless train to be considered roadworthy?

According to the definition contained in the Road Traffic Act, a tourist train is a combination of vehicles consisting of an agricultural tractor or a slow-moving vehicle, whose design speed is limited to 25 km/h. For a vehicle to be legally used in this way, information about this limitation must be entered in the registration certificate. This is a condition for admitting such a combination of vehicles to traffic for the carriage of passengers.