04626850 is referenced by 287 patents and cites 12 patents.

A dual operational mode vehicle detection and collision avoidance apparatus is disclosed characterized by use of a single active or passive acoustic ranging device mounted for azimuth directional movement relative the vehicle to automatically detect the presence and direction of objects in the vicinity of the vehicle. Signals generated by the ranging device are time processed along with azimuth directional signals to generate an output utilized to provide both an audio and visual display of distance and direction of the detected object from the vehicle. In a first operational mode, i.e. a surveillance mode, the acoustic ranging device is sequentially positioned in a left, center and right azimuth directional position to selectively indicate the presence of objects in the individual azimuth direction. In a second operational mode, i.e. a lane change mode, the acoustic ranging device is driven to either a left or right azimuth directional position in response to actuation of the vehicle's turn indicator lever to continuously detect the presence of objects in the adjacent lane of a roadway.

Title
Vehicle detection and collision avoidance apparatus
Application Number
6/494948
Publication Number
4626850
Application Date
May 16, 1983
Publication Date
December 2, 1986
Inventor
Young H Chey
Irvine
CA, US
Assignee
David Chey
CA, US
IPC
G08G 1/00
G08G 1/16
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