E-bikes have been associated with a growing number of road deaths

Shops in Dublin are modifying electric bicycles to reach speeds of up to 50km/h, potentially allowing cyclists to break the law, The Times has found.

An electric bike has a motor that only kicks into action when the cyclist pedals. It has a maximum power of 250W and automatically cuts out when the bike reaches 25kmph.

The limited engine strength and the requirement for a rider to pedal means that the bike is not legally considered a mechanically propelled vehicle (MPV). Other electric vehicles, such as escooters and segways, are considered to be MPVs because the motor is the sole means of power.

Riders of MPVs are required to have insurance, road tax and driving licences. They are also subject to severe penalties including fixed