Why Use Bike Lights During the Day and Night

By : Mr Mamil
Updated :

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Did you know that riding with lights during the day is one of the many cycling subjects that divides opinion?

On one side, you have those who wonder why cyclists have to work so hard to gain equal rights on the road and question why we have to wear high-vis or use lights during the day when it’s the driver’s responsibility to drive safely.

On the other hand, you have those that say anything you can do to improve your cycling safety, even if it costs money, is a worthwhile investment. I am firmly in the former camp.

I’ll cover the five reasons why you should always ride your bike with lights, regardless of whether it’s day or night time.

Responsible riding

It never hurts to take the initiative while on the road, and having lights during the day is a good way to express that. It is essential that you are seen as far away as possible, so the driver has plenty of time to anticipate the overtake and hopefully pass you safely.

Much like newer cars have adopted daytime running lights, bikes can make too. The more visible you are, the more likely drivers are to see you. At night, lights are a lifesaver, mostly if you ride wearing a darker kit.

Then there’s how you appear to other road users. Follow the law, be safe and make efforts to help drivers see you, and they (should) treat you with more respect. Break the law, don’t use lights, or help maintain your safety, and drivers can react accordingly.

To see

If you ride at night, you need a good set of bright lights to see where you’re going. Most countries in the world require lights by law, but they make practical sense too.

It would be best if you saw upcoming hazards, road furniture, depressing drain covers, debris, pedestrians, and all the usual hazards we have to contend with on the road.

This is especially true in cities or on routes you don’t know, like the back of your hand. It would be best if you had time to anticipate hazards so you can maintain pace and ride predictably around other road users.

To be seen

If other road users are to pass you safely, they need to know you’re there. Either during the day or at night, being seen helps you be safe. At night, lights are the only way other road users will see you until they are close.

The further back they can see you, the safer for everyone. Even if you’re wearing reflective gear or a bright kit, you need lights to be seen at any distance.

Over a third of cycling crashes occurred in low light conditions (dawn, dusk, or nighttime) according to a survey done by the Queensland University of Technology in 2013. The high occurrence is disproportionate given that this is not the busy period of cycling for the day.

A 2010 study by Phillipe Lacherez found motorists had looked but didn’t see the cyclist before it was too late. He suggested that a solution to this was wearing reflective clothing and fitting a light that works during the daytime and at night.

Another study in Denmark showed a 47 percent decrease in accidents when lights were used throughout the day.

Be prepared for changing conditions

If you live somewhere with changeable conditions, using or at least having lights with you during the day can make sense. In areas where it can quickly get dark, foggy, or cloudy during the day or otherwise make seeing you difficult, it makes sense to use lights.

Even on the sunniest of days, some world areas are changeable and can switch from cloudless skies one minute to deep fog or dark storm clouds the next. If we know there’s a chance for rain mid-ride, we will most likely bring a rain jacket along.

The same goes for bike lights.

Having lights with you at all times makes perfect sense. Being prepared is all part of being a cyclist, and this time it’s about safety and not just looking good or having the right kit for the conditions.

It’s required by law

In most counties of the world, it is against the law to ride in the dark without lights. While the exact wording of the regulations may differ by region, the usual guidelines use white light at the front and a red light at the rear.

In the US and UK, a centrally located white light must be displayed on the front at all times after dark. A single red rear light is also required to be fitted to any bike being ridden after twilight. It should also be positioned centrally and be pointing to the rear.

Flashing lights are gradually being accepted into law, but it makes sense to check where you live. An additional flashing red light is beneficial at the rear of your bike as it grabs drivers’ attention.

It should ideally be used in conjunction with a steady red light as studies indicate it is difficult for drivers to measure distance with a flashing light instead of a static one.

Make sure you are aware of the specifics of bike light regulations where you live. You may find that not many police are aware of the specifics, so having good knowledge of your responsibilities and adhering to them can save you many hassles on the road.