| CPC G01S 5/0072 (2013.01) [G07C 5/008 (2013.01); G08G 1/163 (2013.01); G08G 1/166 (2013.01); H04W 4/46 (2018.02)] | 19 Claims |

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1. A method for autonomous vehicles to avoid a collision, the method comprising:
a) detecting, by a first autonomous vehicle, based on sensors mounted in or on the first autonomous vehicle, a second vehicle;
b) determining, by a processor of the first autonomous vehicle, that a collision between the first and second autonomous vehicles is imminent;
c) transmitting, by a transmitter of the first autonomous vehicle, a first wireless message indicating a wireless address of the first autonomous vehicle and requesting assistance from the second autonomous vehicle;
d) emitting, by an emitter of the first autonomous vehicle, a first infrared signal simultaneously with the first wireless message;
e) receiving, by a receiver of the first autonomous vehicle, a second wireless message from the second autonomous vehicle, the second wireless message indicating a wireless address of the second autonomous vehicle;
f) detecting, by one or more infrared detectors in or on the first autonomous vehicle, a second infrared signal emitted by the second autonomous vehicle;
(g) determining, by the one or more infrared detectors in or on the first autonomous vehicle, a direction of arrival of the second infrared signal; and
h) determining, by the processor of the first autonomous vehicle, according to the direction of arrival of the second infrared signal, which particular vehicle, among multiple vehicles proximate to the first autonomous vehicle, is the second autonomous vehicle.
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