To flash or not to flash

[Racing roadkill]

I have seen so many motorists parked on the pavement I have come to the conclusion they couldnt judge distance on a tape measure placed in front of them. Flashing or non flashing it is all too much for many...

True.

 

[mjr]

Have you tried it?

Thought not.

What a brilliant line of argument(!) Have you ever tried cycling directly into the front of an HGV doing 30+mph? Then how can you say it's a bad idea?