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Cake day: March 18th, 2026

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  • Research carried out for Clean Cities shows that a 10cm increase in bonnet height from 80cm to 90cm results in a 27% greater chance of death for pedestrians run over.

    Ironically the reason for the increase in bonnet height was actually EU safety regulations which required car makers to increase the gap between the bonnet. This was because when a pedestrian got hit and their head hit the bonnet there was very little gap between that and the solid engine underneath so their head was effectively hitting the solid engine. The idea of increasing the gap was that it allowed the bonnet to deform more, dissipating the energy and reducing the trauma the head experienced.