Flashing vs Steady: Which Bicycle Light Passed the Law?

Safety is a primary concern in bicycling. As it is a sport on roads where other vehicles may pass, it is a risky hobby as cyclists have less protection and are more at risk for road accidents. Therefore, one of the best ways to ensure safety is to install a bicycle light that can guide cyclists even through the darkest and foggiest of nights. But since bicycle lights vary depending on the lights’ steadiness, which one is better—flashing or steady lights?

The UK Requires Bicycle Lights For Cyclists

The necessity of installing a bicycle light is determined by the specific rules set by the country’s transport laws. In the UK, cyclists must have a steady white light and a flashing red light at their rear.

It doesn't matter if a cyclist chooses to flash over steady lights. However, the government requires at least one to four Hertz flash frequency. It means that the light can switch from stable to flashing and back again or even stop flashing from time to time.

The Importance of Steady Lights

The main reason lawmakers favour steady bicycle lights is that steady lights are easier to spot. It’s easier to spot a car parked along the street, right? Steady lights are better for road safety as it is easier for drivers, pedestrians, and other road users to notice a cyclist with a steady light, particularly during the night.

Flashing Lights Are Better For Visibility

Flashing lights are still important. Even though steady lights are better for road safety, flashing lights are still crucial. Flashing lights are generally easier to spot than steady ones. While both are used for the same purpose, flashing lights are more visible to other road users than steady lights.

Factors to Consider in Choosing Bicycle Lights

Aside from the bicycle lights' steadiness, there are other factors to consider in choosing the perfect device for a cyclist's needs. Some factors include price, battery life, and brightness.

1. Price

For those budget-conscious cyclists, the price is an essential factor in buying bicycle lights. For budget-conscious cyclists, the price is crucial in purchasing bicycle lights.

2. Battery Life

Bicycle lights should have a decent battery life as cyclists ride their bicycles for miles. The battery life of a bike light ranges from five to 100 hours. In choosing a light, cyclists should consider the battery life as some lights can be useless after a few hours. To avoid this situation, cyclists should choose lights with long-lasting batteries.

3. Brightness

Another essential factor to consider in choosing bicycle lights is their brightness. Different lights have different brightness levels, which can affect visibility. For example, a cyclist can use a light that illuminates just a few meters to a light that lights up more than a hundred meters. Cyclists should choose the light that illuminates the most to ensure road safety.


The UK requires a steady white light and a flashing red one for cyclists. The most important reason for this law is to provide road safety for cyclists. Steady lights offer better protection as they are easy to spot. Flashing lights, however, are also crucial as they are easier to spot than steady ones.

Meanwhile, the factors to consider in choosing bicycle lights include price, battery life, and brightness. When choosing the perfect bicycle light for their needs, these factors should be the top priority in cyclists' minds.

Crushbike covers all bikers’ needs, such as cycling accessories and more. Our goal is to provide the highest quality biking needs, such as the best bicycle lights and comfortable bicycle seats, to ensure a safe and enjoyable biking experience. Shop on our website and enjoy easy returns, quick deliveries, and money-back guarantees today.

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