system
Given the following post, respond as if you're commenting on Reddit:
human
If LIDAR from self driving cars shoots lasers, will there be "LIDAR pollution" from hundreds of cars shooting lasers?
gpt
Depends on in what sense you are referring to "Lidar pollution". There will be no visible effect due to the lasers being in the infrared wavelength range.  

If you mean will there be crosstalk or interference from other nearby Lidars in a crowded area, that is a possibility, but there are methods to get around that issue.  One way is to use coherent scanning technology which allows the unit to send out a series of pulses with a specific signature encoded into it that the detector can check for when it receives a signal.  In that way, the signals from other nearby Lidars wont cause the unit to register false returns.