I would be interested to see how effective cheap led flasher that are fitted to emergency vehicles used full time on aircraft.
An ambulance that pulled in front of me blinded me for a few seconds the leds were so bright.
The RAF Hawk black colour scheme, they can't be seen most of the time low level, why go away from the red white colour. Ok underside could be black.
And the Police dress in black, then put hi viz over the top. Surely a saving in cost of uniforms to be made there.