1) a bike's suddenly going to turn right
2) which exit they're planning on getting off the roundabout on
3) if the cyclist is planning on nipping round a slowing down bus or lorry
4) generally, any information is gold dust in terms of knowing what they're about to do
Well, I was thinking about this quite a bit today as I biked across London, and was again struck by how many cyclists don't bother. It's actually quite easy once you've practiced a bit, so a few ideas:
|Looking back and signalling: Source|
- indicate giving the maximum notice
- stick that arm out boldly and with confidence, don't do it half-heartedly
- if you're sure the car behind you has clocked you and knows what you're about to do, start your turn with confidence
- there's always a tricky bit when you start turning - this is the moment to grab both handle-bars. You DO NOT want to start your manoeuvre with only one hand!
When I'm doing a little nip around a stationary bus or something, I try to incorporate a friendly wave at the driver behind me too - though arguably this is taking things too far. But it's good to acknowledge that a driver has often slowed down to let you pull out.
I'm often also heard to mutter "thanks for not killing me" but I tend to keep that to myself.
Good luck. KC
PS there's a good site Montgomery Bicycle Class which gives some good tips on this