So, from experience at a couple of them, I know driving in an airport space near a control tower will trigger the laser alert every now and then.
However, I was riding on the interstate and got three laser alerts in a two mile span. My blinder never went off (not that that means anything) but I'm 99% confident there was not a cop anywhere in the area.
Upon my return trip, laser went off in the same area. Now it there were a lot of stores and strip malls to the left and right, but, I was surprised all that interference would set off the laser. I know it's sensitive to a lot of interference, but, I guess I just thought laser was very specific unlike other bands where things just bleed in.
Educate my sorry ass!