The single most visible thing that marks you out as a cyclist are pedal reflectors, Shimano still do them for SPD's.
They are the best thing when being approached from behind to show what you are.
White light on the front.
Red LED on the rear constant and maybe a flashing one too.
It's so bloody dangerous anyway I'd rather not though!
Somerset, like 'Heartbeat' with newer cars!
Retro MTB: 1992 Cannondale M1000 Deore XT M730. 1992 Raleigh Dyna Tech Quantum Deore XT.
Retro Road: 1992 Eddy Merckx Corsa Extra Telekom Shimano 600 STI. 1993 Dyna Tech Ti Campagnolo Athena 8 Ergopower.
Modern: 2004 Wilier scandium Ultegra 6600. 2014 Wilier GTR Ultegra 6800.