US 11,807,274 B2
L4 auto-emergency light system for future harsh brake
Fan Zhu, Sunnyvale, CA (US)
Assigned to BAIDU USA LLC, Sunnyvale, CA (US)
Filed by Baidu USA LLC, Sunnyvale, CA (US)
Filed on Jun. 30, 2020, as Appl. No. 16/916,470.
Prior Publication US 2021/0403043 A1, Dec. 30, 2021
Int. Cl. B60W 60/00 (2020.01); B60W 30/09 (2012.01); B60W 30/095 (2012.01); B60W 30/18 (2012.01); B60Q 1/50 (2006.01); B60Q 1/44 (2006.01)
CPC B60W 60/0017 (2020.02) [B60Q 1/44 (2013.01); B60Q 1/535 (2022.05); B60W 30/09 (2013.01); B60W 30/0953 (2013.01); B60W 30/0956 (2013.01); B60W 30/18109 (2013.01); B60W 60/0016 (2020.02); B60W 2552/53 (2020.02); B60W 2554/80 (2020.02); B60W 2554/802 (2020.02)] 21 Claims
OG exemplary drawing
 
1. A computer-implemented method of activating an emergency braking signal in an autonomous driving vehicle (ADV), comprising:
determining that any part of a planned trajectory of the ADV meets a first condition, wherein the first condition requires a deceleration that is less than a predetermined deceleration threshold and lasts for at least a predetermined duration;
determining that a predicted time to a collision with an obstacle following the ADV meets a second condition, wherein the second condition requires that the predicted time to the collision is less than a predicted time threshold;
activating the emergency braking signal for the ADV, in response to determining that both the first condition and the second condition are met; and
deactivating the emergency braking signal a predetermined signal duration after at least one of the first condition or the second condition is not being met.