Vehicle monitoring has become a necessity for companies in the transportation sector. Vehicles are monitored to try to guarantee safety, reduce costs in operations, theft and contraband, to verify the driver's compliance with the assigned route, to control speed and fuel consumption, among other reasons. Operational costs (including the value of freight, maintenance and fuel) in a company dedicated to transport can be 40% of the company's operating costs, only in terms of fuel consumption. Technological tools can help companies make better decisions, such as choosing a vehicle with better fuel consumption, reducing delivery time at the destination and generally lowering operating costs. This work presents a panorama of works in this area.