The Modular Trailer System (MTS) is designed to provide the maximum possible flexibility on the surface. Up to four trailers can be towed by the vehicle to allow the transport of deployable equipment (i.e. communication relays) and experiments as well as specimen return. Each trailer will have 1.2m3 of useable volume and a 50kg mass capacity. Their uniformity allows for easy interchange based on each drive's goals. It should be kept in mind that a single piece of equipment or an experiment can be divided up among more than one trailer as there will be the option of astronaut-assisted assembly. Through the conversion of speed into towing power and vice versa, zero to four trailers can be towed without exceeding available electrical power. To increase the efficiency of the entire vehicle and MTS system, the wheels of each trailer will be powered, which reduces slippage. To connect the MTS units to each other and to the vehicle, a four-hinge hitch mechanism will allow freedom along all three primary axes of rotation.