If you need to cut someone free from an accident or get to them through a car window, you'll need a proper tool on your person immediately not in the cruiser at the top of the culvert. A rescue knife has a 3" 4" blade that's partially serrated (for cutting all materials) and blunt-tipped (for cutting clothing without cutting the victim), and has a carbide tip or plunger (for breaking car windows). Cops do cut people free of seat belts, and your baton will not break most car windows victims have died as cops tried. Carry your rescue knife.