Bicycle visibility in town is not only a winter or night-time topic. Morning light, rain, shadows between cars and busy junctions can make a rider hard to notice even during the day.
European road-safety material for cyclists highlights predictable movement, working lights and reflectors. These help drivers understand not only that a bicycle is ahead, but also where it will be in the next few seconds.
In practice, that means checking front and rear lights before riding, keeping batteries fresh and not relying only on street lighting. A cyclist should signal turns early and avoid sudden weaving between parked cars.
The technical condition of the bike is part of visibility too. Clean reflectors, adjusted brakes and stable tyres make riding calmer, and calm movement is easier for everyone else to read.