A close brush with a distracted driver is enough to intimidate the most avid bikers from riding at night. The problem isn't just about visibility, as safety lights are effective at capturing the attention of a driver. However, these lights are typically constrained to the bike frame, which highlights only a fraction of the bike's envelope. Bike lanes have proven to be an effective method of protecting cyclists on congested roads.
One key is that the lane establishes a well defined boundary beyond the envelope of the bicycle, providing a greater margin of safety between the car and the cyclist. Yet, only a small fraction of streets have dedicated bike lanes, and with an installation cost of $5,000 to $50,000 per mile, we shouldn't expect to find them everywhere anytime soon. Instead of adapting cycling to established bike lanes, the bike lane should adapt to the cyclists.