AUTONOMOUS VEHICLE TRAJECTORY LOSS MONITOR

Techniques are described herein for generating and performing backup trajectories on an autonomous vehicle, based on failing to receive a driving trajectory from a primary trajectory generation system. A trajectory execution system may be configured to periodically receive driving trajectories from the trajectory generation system and implement the trajectories via the drive system of the autonomous vehicle. The trajectory generation system described herein also may generate and validate future safety trajectories in order to determine whether the trajectory execution system can generate valid safety trajectories in response to trajectory loss event. The future safety trajectories generated by the trajectory generation system may be based on a resettable trajectory loss timer of the trajectory execution system and may apply a similar safety algorithm to the future vehicle state and location based on the primary driving trajectory determined by the trajectory generation system.