Although lighting is a very important factor of being safe when cycling on the road, being aware of traffic and the law of the road is far more beneficial. Reg

Although lighting is a very important factor of being safe when cycling on the road, being aware of traffic and the law of the road is far more beneficial. Regardless of the rights and wrongs of going around without lights on, if you do get involved in an accident, you won't have a leg to stand on. So no bike replacement, and no payout for missing teeth. When you think about the impact hand injuries can have on your career - let alone anything more serious - frankly I'd recommend lighting up for that reason alone. But please, do wear lights - you'll only be making life easier for everyone else around you.