Originally Posted by babytruck
Some of the Benchmades have that glassbreaker at one end and the strap cutter for seat belts. I'd be pretty upset if they didn't let the fire and medical emergency carry these. Life saving tools are what they SHOULD be called.
Seatbelt cutter and glassbreaker tips can can be on non-auto knives too. Those two features are completely legal.
I think the ones that have an "auto seatbelt cutter", the blade on the seatbelt cutter is far lass than the legal limit of 1.9", so when coupled with a full length blade, that is not auto, they're fine. The auto function, which opens by a button or a mechanism that has a spring or some other mechanical advantage is not directly attached to the blade; would only be illegal if it activated a blade longer than 1.9".
TBH the seat belt cutters are a gimmick and don't really provide any functional advantage over a a standard blade or trauma shears, and I've never seen anyone use one of those glass breaker tips.
The seat belt cutters on some knives are just a recess built into the handle, and those ones are absolutely worthless. The one's on the benchmades would probably be good for cutting 550 cord, though.