At different locations between 30th street and 50th street on 4th avenue in Brooklyn, I have observed marked Impala and Grand Marquis cars waiting for a bait and quite a few speeders getting pulled over. Almost all the cars pulled over that I have seen look very flashy with gigantic spoilers, body kits, etc. The speed limit is 30 mph yet I drive regularly at 40 mph in my non descript car without getting pulled over. So if your car is flashy or is tinted, make sure you are below 30 mph. I once saw a flashy civic at almost half my speed behind me getting pulled over yet I passed by with scant attention. Also, watch out for the red light camera on 4th avenue and 41st street.