From Wikipedia:
Mitsubishi was the first automaker to offer a laser-based ACC system in 1995 on the Japanese
Diamante. Marketed as "Preview Distance Control", this early system did not apply the brakes and only controlled speed through throttle control and downshifting.
[5][6]
In August 1997,
Toyota began to offer a "radar cruise control" system on the
Celsior.
[7][8] Toyota further refined their system by adding "brake control" in 2000 and "low-speed tracking mode" in 2004. The low-speed speed tracking mode was a second mode that would warn the driver if the car ahead stopped and provide braking; it could stop the car but then deactivated.
[9] In 2006, Toyota introduced its "all-speed tracking function" for the
Lexus LS 460. This system maintains continuous control from speeds of 0 km/h to 100 km/h and is designed to work under repeated starting and stopping situations such as highway traffic congestion.
[10] The
Lexus division was the first to bring adaptive cruise control to the US market in 2000 with the
LS 430's Dynamic Laser Cruise Control system.
[11]
