Went to visit my sister in Cambridge last weekend. It's amazing we ever hear about students who studied there, you wouldn't think any would survive as all those on bike don't seem to bother with lights or helmets and insist on wearing dark clothes! I suppose there's so many of them about you end up watching out for them rather than running them down. Aparently every so often the police have a clampdown and fine a load of them for not having lights, but it doesn't seem to make much difference. I'd just feel so vulnerable riding like they do.