No. 13 · 19 Oct 2026 · 0:29
This speed bump is unfair to small cars
These blocks were designed when cars were narrower.
From the video's description
Same block, same 30 km/h: a VW Polo and a Chevrolet Silverado. This speed cushion is 1.6 m wide, with gaps on both sides. These blocks were designed when cars were narrower. The Polo's wheels sit close together, so its tyres climb the cushion's sloped sides. The Silverado's wheels are about 29 cm further apart (1,743 mm vs 1,457 mm track), so only the inner edges of its tyres touch the low edge.
Sources: UK Traffic Advisory Leaflets 4/94 and 1/98 (speed cushions, 1.6 and 1.9 m widths), TRL Report 312, NACTO Urban Street Design Guide (speed cushions); track widths from manufacturer data as listed by carexpert.com.au / carsales.com.au (Polo 6R, Silverado 1500).
The cushion shown is 1.6 m wide (a common bus-route size). On wider cushions (1.9 m), a pickup climbs them too.
3D models CC BY 4.0: "2020 Chevrolet Silverado 1500 RST" by Ddiaz Design, "2016 Volkswagen Polo" by BHP3D, "Fiat Abarth 500" by Luquita, "2001 Toyota Yaris" by Dave Love, Renderpeople, Jungle Jim, tanity, Mike Alger; Poly Haven and ambientCG (CC0). Sounds: artsnbytes, JPBILLINGSLEYJR (CC0).
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