Do I Really Need Lights on My Bike… Even During the Day?

It’s a question many cyclists ask themselves. We all understand the need for bike lights at dusk or in the dark. But are they really necessary in broad daylight?

The short answer: yes, absolutely.

And not just a rear light — a front light too. Here's why daytime running lights should be part of your essential gear, right alongside your helmet and bell.

1. Be Seen — Even in Bright Conditions

Nearly 80% of collisions involving cyclists happen during the day. Why? Because, contrary to popular belief, cyclists are not always easy to spot — especially in busy urban environments, when riding against the light, or when sunlight creates patches of shadow.

A well-placed light with a strong flash instantly grabs the attention of drivers, even from a distance. That’s exactly what daytime running lights are designed to do: increase your visibility during the day, not just light up the road at night.

2. Lights Designed for Daytime Are Real — and They Work

Unlike basic safety lights often marketed for visibility, modern daytime lights are powerful and purpose-built, with features specifically designed to catch the human eye:

• Irregular flash patterns: more noticeable than steady lights

• Wide beam angles: up to 180° of side visibility

• Brightness levels adapted for daylight:
  – Rear: 100–200 lumens
  – Front: 200–500 lumens

These lights are USB rechargeable and offer several hours of runtime, even on full power. Just leave them on in “day mode” all the time — set it and forget it.

3. Front AND Rear Lights = Double Protection

Many cyclists only use a rear light. But the front light is just as important, especially if you're riding toward traffic, crossing intersections, or sharing the road with cars.

A daytime front light isn’t about seeing — it’s about being seen. It signals your presence well before a driver can visually identify you as a cyclist.

4. What About Smart Lights?

Some models, like the Trek Flare and Ion RT, go a step further:

• They connect wirelessly to your Garmin or Wahoo cycling computer

• They turn on automatically when you start your device

• Battery status shows directly on your screen

• They integrate with rear radar systems for full-scope safety

If you want to automate your safety and eliminate the risk of forgetting your lights, this is a great solution.

5. “I Ride in the City at Low Speed — Do I Really Need Them?”

Actually, yes — even more so. Cities are full of distractions: pedestrians, traffic lights, signs, low-angle sun, and busy traffic. You need to stand out even more in this chaotic visual environment.

Even at low speeds, an active light can prevent an accident at an intersection or from a driver’s blind spot.

A Small Accessory with a Big Impact

Daytime running lights are not a gimmick. They are now considered one of the most effective ways to improve your visibility on a bike, regardless of weather, light conditions, or environment.

Make them part of your routine. A powerful, well-positioned front and rear light can be the difference between being seen or being overlooked — and between riding with confidence or riding at risk.