Sistemas modernos de GPS têm o sistema de controle de passagem /voltas (lap).

Observe que essa terminologia é nova, mas volta seria um termo adequado na minha opinião.

Ref abaixo:

Optical lap receiver - The infrared receiver, mounted on the vehicle, receives the lap signal from the infrared transmitter. It simply needs to be pointed at the side of the track where the transmitter is located and needs line of sight.
The strong transmitter signal guarantees almost no missing laps signals in traffic, as the signal “bounces” off nearly everything.


Optical lap transmitter - The Infrared transmitter, or Beacon as it is often called, is set near the edge of the track to trigger a lap time to the onboard system of a passing vehicle.
All beacons have a common frequency so one only transmitter per track is required.
The beacon transmitter may be powered by the internal battery pack, composed of 8 AA batteries, or by a 12 V external power source.