Contracts are normally formalised with the driver of the vehicle, who is then the person authorised to drive it.

It is often the case that companies require a minimum age (ranging between 21 and 25 years old) and a minimum driving experience (in possession of driving licence for at least one year, though some companies require up to three years). It is important not to break these rules, as this may give rise to serious problems if an accident occurs with the hired vehicle.

If various persons intend to drive the vehicle, this should be clearly stated in the contract, along with all the necessary data, particularly concerning driving licences. The incorporation of other drivers may imply a small increase in price but avoids a lot of problems in case of accident.