20 mph for e-bikes!

We want the Government to increase permissible maximum assisted speed for e-bikes to 20 mph (32 km/h). The current limit of 15.5 mph (25 km/h) is restrictive compared to those set in some other countries, including the USA, Canada, New Zealand and Brazil.

We believe a maximum assisted speed of 20 mph offers a more natural and comfortable riding pace, and would enable e-bike users to fully utilize their gears and the bike’s potential, and enhance the riding experience. A higher speed limit could also reduce the inclination to illegally modify e-bikes to bypass the current restrictive limit. The change aims to improve safety, efficiency, and enjoyment for e-bike users, fostering a modern approach to transportation.

Non assisted bike cruising speeds:

Commuter bike

Casual: 10 mph
Moderate: 14 mph
Fit: 16 mph

MTB

Casual: 13 mph
Moderate: 16 mph
Fit: 19 mph

Gravel bike

Casual: 16 mph
Moderate: 20 mph
Fit: 23 mph

Racer bike

Casual: 18 mph
Moderate: 23 mph
Fit: 28 mph

Comparing the average speeds of non-assisted bikes and e-bikes can be misleading due to the varied conditions these averages encompass, such as stops, uphill climbs, and other factors that significantly lower the overall speed. Instead, focusing on cruising speed on flat terrain offers a more accurate representation of a bike’s performance under consistent conditions. On flat terrain, the impact of stopping, climbing, and other variables is minimized, allowing for a clearer comparison of the potential speed capabilities of each bike type. This approach provides a more direct measure of how efficiently a bike can maintain higher speeds when external factors like terrain and stops are controlled, offering a fairer and more relevant comparison point for evaluating performance.

Electric assisted bike cruising speeds:

e-bike

Casual: 16 mph
Moderate: 17 mph
Fit: 18 mph

Electric bikes face challenges in surpassing their assisted speed limits on flat terrain due to several factors. The heavier components, including the motor and battery, add significant weight, demanding more effort to propel the bike forward. Fat tires, often used for their stability and grip, increase rolling friction, making it harder to maintain high speeds. Additionally, the motor can introduce extra friction when the bike exceeds its assisted speed limit, further hindering acceleration. Aerodynamic drag, more pronounced in bulkier e-bike designs, and regulatory speed limits for motor assistance, typically around 25 km/h, also play a role in limiting speed. Compared to traditional bikes, which benefit from lighter weight and more direct power transfer, e-bikes involve more complex energy conversion processes, leading to efficiency losses at higher speeds. Together, these factors contribute to the difficulty e-bike riders face in catching up with non-assisted bikes on flat terrain.

How increasing speed improve safety?

Reducing the Inclination to Modify Bikes:

By allowing e-bikes to achieve speeds that are comparable to those of non-assisted bikes on flat terrain, riders are less likely to modify their bikes illegally. Currently, some riders “chip” or unlock their e-bikes to bypass the speed limit, which can lead to speeds much higher than the typical 20 mph limit, risking overheating of batteries and motors. This not only increases the chance of mechanical failures but also poses significant fire hazards. A higher, yet safe, speed limit could reduce these unsafe practices by providing sufficient speed for most riding conditions, negating the need for dangerous modifications.

Improved Predictability and Road User Behavior:

When e-bikes can maintain speeds closer to those of traditional bicycles and even some city traffic, it results in more predictable movements for all road users. This predictability can lead to smoother traffic flow and reduce sudden maneuvers that often lead to accidents. For instance, when e-bike riders don’t have to constantly accelerate or decelerate to match the speed of traffic or other cyclists, their movement becomes more consistent, which helps both motorists and other cyclists anticipate and react to their presence on the road more effectively.

Furthermore, when e-bike speeds are aligned with the general flow, it can also reduce the impatience or frustration of other road users, such as drivers who might otherwise engage in risky overtaking. This harmony in traffic speeds can contribute to a calmer, safer road environment for everyone.

Discouraging the Purchase of Non-Certified Bikes:

The market is flooded with non-certified e-bikes, often from Chinese manufacturers, that come equipped with throttles and lack speed limitations. These bikes can reach dangerously high speeds and are tempting for those seeking faster e-bikes within a lower price range. Raising speed limits for certified e-bikes would make them more competitive with these non-certified alternatives, encouraging consumers to opt for safer, regulated, and trusted brands. This shift would also reduce the likelihood of accidents due to low-quality components and poor electrical connections found in non-certified bikes and conversion kits, which are known fire risks.

Promoting Consistent Riding Speeds:

Allowing e-bikes to maintain consistent speeds with non-assisted bikes on flat terrain means e-bike riders won’t feel pressured to overcompensate on more technical sections or climbs to stay with their group. Group riding is inherently safer, particularly on busy public roads, as it increases visibility and reduces the likelihood of accidents. A higher speed limit would facilitate this group cohesion, enhancing overall safety.

Matching Road Traffic Speeds:

In urban settings, where traffic speeds can often hover around 20 mph, a higher speed limit for e-bikes would allow them to better keep pace with cars. This capability would reduce instances of cars overtaking bikes, which is a common cause of accidents. By aligning e-bike speeds more closely with the flow of traffic, the interaction between cyclists and motorists can become smoother and safer, minimizing risky maneuvers and enhancing road safety for everyone involved.

In summary:

Carefully considered increase in the speed limits for e-bikes could lead to a safer riding environment by discouraging unsafe modifications, steering consumers towards certified and safer products, promoting more stable and consistent group riding, and improving the integration of e-bikes into road traffic.

Supporters:

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Should e-bikes go faster in the UK?

A cyclist has started an online petition to increase the maximum assisted speed of electric bikes in the UK. E-bike enthusiast Paulina Stopa has called on the UK government to raise the limit from 15.5mph (25km/h) to 20mph (30km/h), in line with other countries such as the USA, Canada and Brazil…

Read more…

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This space is dedicated to giving a voice to supporters who are passionate about creating safer and more harmonious road environments. We stand together in advocating for sensible speed limits that protect and enhance the well-being of all road users.

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