Nope. They don't work at night. It's because of the heat coming off the hot asphalt from the day. It interferes with the reading. Honestly they make you think it does, but the cops are just bullshitting you man. Run like hell and tell 'em to **** up a rope, you know better and they don't have crap to prove you were speeding.
Let us know how it goes.
Let us know how it goes.