OOOOO Nigel,

hmy:
I think you may have opened up the floodgates there, Every Tom, Dick and Harriet, will claiming their product enhances safety and therefore must be fitted.... Tyre Bands for example, Suspension assisters, etc etc etc....
I do support the use of equipment and protocols that have a proven track record of increasing safety or safety margins, But equally one of the best safety features would be if drivers:-

Stopped being so impatient, and getting frustrated with other road users,
kept within speed limits but maintained good progress,
Stopped tailgating,
Stopped undertaking,
Stopped amber gambling and stop creeping at traffic lights and crossings,
Used MIrror signal manoeuvre,
Indicated when turning or changing lanes,
Lane discipline at round-a-bouts.
Stopped using mobile phones,
Turned the music down so they can hear what's going on around them,
Wore seat belts
Drive in accordance with the prevailing conditions
Turn their base ball hats the right way round and stop smoking! :dry: