Speed Bump vs Speed Cushion vs Speed Hump: Which Do You Need?
Traffic calming is one of the most effective tools for reducing vehicle speeds in residential streets, car parks, and industrial estates. But the terms "speed bump," "speed cushion," and "speed hump" are often used interchangeably — incorrectly. Each has a specific design purpose, legal framework, and appropriate application.
Quick Comparison
| Feature | Speed Bump | Speed Hump | Speed Cushion |
|---|---|---|---|
| Typical height | 75–100mm | 50–100mm | 75–100mm |
| Typical length | 300–900mm | 900–3,700mm | 1,600–1,800mm wide |
| Target speed | 5–10mph | 15–30mph | 20mph |
| Emergency vehicle impact | High | Moderate | Low (straddled) |
| Public highway legal? | Restricted | Yes (Highways Act) | Yes (Highways Act) |
| Best for | Car parks, private roads | Residential streets | Bus/emergency routes |
Speed Bumps
Speed bumps are the most aggressive form of traffic calming — short, high profile, and designed to be uncomfortable at anything above walking pace. Important: Speed bumps taller than 25mm are generally not permitted on public highways under the Highways Act 1980. On public roads, speed humps are the correct product.
Browse our full speed bump range including rubber, recycled plastic, and modular designs.
Speed Humps
Speed humps are longer, lower-profile ramps specifically designed for public highway use. The Highways (Road Humps) Regulations 1999 require: minimum height 25mm, maximum height 100mm, minimum length 900mm, advance warning signage, and consultation with emergency services.
Speed Cushions
Speed cushions only span part of the road width. Placed in pairs, they force cars to slow down while allowing buses, emergency vehicles, and cyclists to pass unimpeded. Required on bus routes, emergency vehicle priority routes, and cycling routes.
Which Product for Which Application?
Car Parks & Private Land
Rubber speed bumps are the most cost-effective solution — quick to install, highly visible, and replaceable modularly. See our speed bumps for car parks.
Residential Streets (Public Highway)
Speed humps or speed cushions, installed by the local highway authority or with their approval. A Traffic Regulation Order (TRO) may be required.
Cost Guide
| Product | Cost |
|---|---|
| Rubber speed bump module | £40–£80/m |
| Rubber speed hump | £60–£120/m |
| Speed cushion pair | £200–£450 per pair |
| Asphalt hump (highway) | £800–£2,500 |
Related guides: rubber speed bumps | speed cushions vs speed humps | road humps UK regulations