See also:

Audible signal
The Park Assist system uses an intermittent tone that pulses faster as you come close to an object, and becomes constant when you are within approximately 1 ft (30 cm) of an object in front of ...

Marker lines
The PAC system's lines 1 Marker line for a 1-foot (30-centimeter) zone behind the vehicle 2 Marker line for the clear back-up zone 3 "Wheel tracks" The solid line (1) indicates a zon ...

Sub-channels
Example of an HD Radio station with sub-channels In many cases, a main HD Radio station (FM wavebands only) will also have sub-channels offering additional types of programming or music. In such ...