Mars colonization will require the use of a great number of construction vehicles. Some of these will be autonomous, some will require human operators.
Self driving trucks are already making inroads in Earth mining operations. In the near future, self driving trucks and self driving cars will become part of our everyday lives. This will become even truer on Mars. The initial Mars Exploration Rovers will rapidly be superseded by specialized vehicles, such as trucks, cranes and the Martian equivalent of cars, both inside and outside the settlement.
Mars may prove to be the ideal place for implementing Personal Rapid Transit (PRT) systems.
Use of internal combustion engines in a Martian settlement will probably not be possible, so simple electrically powered self driving vehicles could be used, providing transportation inside the settlement structure.
It will probably make sense for the initial range of utility vehicles to be build on a common frame, when possible. This is already the case on Earth, where truck frames can end up in a number of vehicle types.
Short haul or long haul trucks would find use in mining, road and site preparation work.
Semi, or towing truck
A semi is a truck body and cab used to haul a trailer, using a fifth wheel coupling.
Platform cranes known as boom trucks are among the most versatile of utility vehicles.
Self driving mining trucks are already in use on Earth. This trend should continue on Mars, for reasons of efficiency and of safety.
Tanker trucks can be used when pipelines are not practical, for small volumes or specialized usages.