A vehicle is an asset that has a tracker build in and needs special access rights in order to view it.
A vehicle usually travelles from point A to point B. If your vehicle has a car tracker build in, then the trip from A to B is recorded. We call each individual travel a trip.
All trips are collected individually similar to a classic driver log.
Some vehicles have a special setup where a user must identify with a card in order to use the vehicle.
The card id is an id which is written onto an RFID card and is identifying this card.
