I can't speak to any production systems, but the ideal is to use a "sensor fusion" approach which can safely degrade or alert the driver when a sensor is lost.
Lidar, cameras, wireless communication with other vehicles and infrastructure, and with the internal sensors in the car.
More concerning would be adversarially-crafted signals. (Think a Wil-E-Coyote style fake-tunnel, but for lidar and and whatnot too.)
I would bet still better than how teslas fail to recognize cyclists or motorcycles still, even in 2023
And most systems use an array of sensors like radar, laser, and vision too. It’s only musk who is hell bent on lying to his customers about machine vision and also lying about his intentions where the goal is cost savings and not because machine vision is better.
I think the reference is to ALP systems which are used to defeat law enforcement speed guns? Not sure if those operate on the same frequencies as the DrivePilot LiDAR. It seems unlikely they do otherwise LE would have difficulty prosecuting speeders in these new vehicles?
