You're entering a dangerous world here. Every patient who is not under section has the right to leave your vehicle (hopefully not at 50 mph) so I would guess the answer is not to convey patients who need restraining without the standard 42 police officers in tow. Yes I know some people will just kick off with no notice but to be honest restraints won't help there either cos it'll be to late. Truth is, stop the motor, get out and if the patient smashes it up I'm sure someone at K1 will replace it for you. Restraints will not make crews safer, they'll just cause conflict.