[aidenn0]

In a heterogenous environment this is not necessarily true; a radar with a powerful transmitter could damage a radar with a very sensitive receiver, particularly at close ranges.

There are military jamming devices that can quite handily permanently damage radars not designed to distinguish it.

[dingaling]

Tangent: the Soviet MiG-25P interceptor had a 600kW radar which was lethal to small animals if used on the ground.

[dllu]

Oh I see, that makes sense. I wonder if any automotive radars are that powerful.

[aidenn0]

Almost certainly not. The FCC approval process would likely catch that. Lasers are also far more focused then microwaves (typical spot size of a cheapo laser pointer is 12cm at 100m away; police LIDAR is good to target a single car out to at least 1/4 mile).