Speed Cushions vs Speed Humps: Which Should You Choose?

If you are comparing speed cushions vs speed humps for a car park, worksite or private road, the main difference is how each device covers the traffic path.

Speed cushions create a raised obstruction that allows different vehicles to negotiate the road, depending on their wheel tracks and the installation layout. 

On the other hand, speed humps create a continuous raised section across the intended vehicle path.

Neither option guarantees a particular driving speed. The better choice depends on your vehicle mix, available road width, pedestrian activity and access requirements.

Rubbr’s traffic-calming and safety products supply modular components for both systems.

It helps to understand how each system works and what its installation requirements are.

What Are Speed Cushions?

Speed cushions are raised traffic-calming devices that occupy selected sections of a roadway rather than necessarily extending across its full width.

Their shape and positioning can influence how vehicles cross them. Depending on the design, vehicles with different wheel tracks may experience the raised sections differently.

However, this does not mean speed cushions are automatically suitable for buses, emergency vehicles or heavy trucks. Their suitability depends on the installed geometry and vehicle movements.

Rubbr’s modular system includes:

• A rubber speed cushion middle piece that forms the main raised section.

• A matching speed cushion end section that provides the transition at the end of the assembled treatment.

The end section measures 250 x 900 x 50mm.

These components allow the installer to build a treatment using compatible sections rather than a single fixed-size unit.

Speed cushions are worth considering if the site needs a targeted treatment, and the proposed layout can accommodate the expected vehicle mix.

What Are Speed Humps?

Speed humps are raised sections installed across the intended traffic path to encourage drivers to approach and cross at an appropriate speed.

Unlike speed cushions, a continuous hump generally requires both sides of a vehicle to travel over the raised surface.

Rubbr’s rubber speed hump middle section measures 250 x 350 x 45mm.

The sections are modular, so calculate the required quantity based on the approved installation width.

The system also uses a compatible speed hump end section, measuring 180 x 350 x 50mm.

The middle sections are rubber, while the listed end sections are plastic.

Rubbr’s rubber middle sections feature contrasting black and yellow colouring with reflective glass beads to improve visibility.

Rubber speed humps can suit defined vehicle routes in car parks, commercial properties and private access areas, provided the site assessment supports their use.

Speed Cushions vs Speed Humps: Key Differences

The main differences are road coverage, vehicle experience and the components needed to complete the installation.

The choice should start with the traffic problem rather than the product dimensions.

For example, a continuous hump may suit a simple car park aisle. A more complex access road with different vehicle types may need a closer assessment before either format is selected.

Which Is Better for a Car Park?

Car parks have several competing movements. Drivers enter and exit spaces, pedestrians cross aisles, and vehicles turn through relatively narrow areas.

A traffic-calming device needs to work within those movements without creating another problem.

When speed humps make sense

Car park speed bumps, commonly sold as speed humps, may suit straight driving aisles where a continuous raised treatment is appropriate.

The contrasting colours of Rubbr’s rubber sections can help make the installation visible.

However, check the distance from parking bays, intersections and pedestrian crossings. A hump too close to a turning area may interfere with vehicle manoeuvres.

When speed cushions may suit

Speed cushions may suit a layout that calls for a targeted raised section rather than continuous coverage.

The key is whether vehicles can negotiate the arrangement as intended.

Check lane width, wheel paths and whether drivers could steer around the cushion into another traffic or pedestrian area.

For car parks, start with the vehicle movements and pedestrian conflict points. Then assess which treatment fits without interfering with access, turning or drainage.

Speed Cushions vs Speed Humps for Worksites and Warehouses

Worksite traffic calming needs more careful consideration when different vehicle types use the same route.

A warehouse might have staff cars, delivery vans, forklifts, rigid trucks and semi-trailers moving through different areas.

A raised treatment suitable for passenger vehicles may not work for every industrial vehicle.

Vehicle types and loads

Before choosing a device, check:

• Vehicle wheel tracks and ground clearance

• Loaded and unloaded vehicle conditions

• Forklift routes and carried loads

• Truck turning and reversing movements

• Delivery and emergency vehicle access

• Pedestrian crossings and shared routes

Forklifts deserve close attention. Their smaller wheels, loads and operating characteristics can make raised surfaces unsuitable for some routes.

Do not assume that a product’s load rating confirms suitability for every vehicle or application.

Traffic frequency

A warehouse entrance may experience heavy traffic during shift changes, while a loading area may have regular truck movements throughout the day.

Repeated crossings can affect vehicle operation and equipment wear.

Consider whether the proposed treatment creates an unnecessary obstacle near loading docks, tight turns or areas where vehicles carry sensitive loads.

For mixed-vehicle worksites, a professional traffic assessment may identify a more appropriate arrangement, including vehicle separation or alternative controls.

Choosing Traffic Calming for Private Roads

Private road speed humps are often considered for residential complexes, strata properties and commercial access roads.

The main concerns usually involve vehicle speed, pedestrian safety and complaints about driver behaviour.

However, private ownership does not mean you can install a device without review.

Vehicle access

Consider residents’ cars, delivery vehicles, rubbish trucks, maintenance vehicles and emergency services.

If the road is narrow, check whether vehicles can cross the proposed treatment without leaving the intended traffic path.

Noise and neighbouring properties

Raised devices can generate tyre and suspension noise as vehicles cross them.

Drivers may also brake and accelerate near the installation.

This matters when homes or occupied buildings sit close to the road.

Ownership and approvals

Confirm who owns the road and who can authorise changes.

Strata properties may require owners corporation approval, while other private roads may have easements or access obligations.

The correct treatment depends on the site, not simply whether residents prefer speed cushions or speed humps.

How to Calculate Your Modular Speed Hump Sections

Once the proposed treatment has been assessed, you can estimate the components needed.

Rubbr’s speed hump middle sections are 250mm wide.

Four middle sections therefore create approximately one metre of assembled middle-section length.

Use this first-pass formula:

Required middle sections = proposed middle-section length ÷ 250mm

Round up to the next whole section.

For example, if the required middle-section run is 3,000mm:

3,000 ÷ 250 = 12 middle sections

You would then allow for the compatible end pieces separately.

Rubbr’s end sections measure 180 x 350 x 50mm, so check how they connect to the rubber middle sections before confirming the total assembled dimensions.

This calculation estimates product quantity. It does not establish the correct width for a traffic-calming installation.

Planning a Modular Speed Cushion System

Speed cushions also use matching middle and end sections, but their layout requires a different approach.

The middle pieces create the raised area, while the end pieces provide the transition.

Before ordering, establish:

• The approved cushion arrangement

• Required dimensions and spacing

• Vehicle wheel tracks

• Lane width and available clearance

• Number of middle sections

• Number of matching end sections

• Fixing and surface requirements

Do not calculate cushion quantities using road width alone. Unlike a continuous hump, the position and spacing of the raised sections can affect how different vehicles negotiate the installation.

A marked-up layout is particularly useful when requesting product quantities or installation advice.

Installation and Visibility Requirements

Both systems need a suitable mounting surface and appropriate installation.

Before fitting the components, inspect the pavement for cracks, uneven areas, loose material and drainage problems.

The fixing arrangement must suit the surface and expected traffic loads.

Surface and alignment

Check that the proposed installation area is structurally suitable.

Position the sections according to the assessed layout and ensure adjoining pieces align correctly.

Poor alignment can create uneven transitions or unnecessary movement between sections.

Visibility

Rubbr’s speed hump middle sections use black and yellow colouring with reflective glass beads.

These features help drivers identify the raised treatment, but they do not replace signs, lighting or line marking required for the particular site.

Drainage

Check existing surface falls, drains and low points.

A raised installation should not create unwanted ponding or redirect water into pedestrian or building access areas.

Maintenance

Include the finished installation in routine inspections.

Look for loose fixings, damaged edges, displaced sections and worn reflective surfaces.

Modular components may allow individual damaged pieces to be replaced without removing the entire treatment.

When Do You Need Professional Assessment or Approval?

Some traffic-calming installations require more than selecting the correct product.

Public roads, council-controlled areas and school zones require the involvement of the relevant authority and appropriate professional design.

Do not assume a product advertised for these applications can be installed without approval.

Private sites also need an assessment of vehicle access, pedestrian movements, pavement suitability and operational risks.

Professional advice is critical where:

• Heavy vehicles or forklifts use the route

• Emergency access must be maintained

• Pedestrians and vehicles share limited space

• Sightlines or road geometry are complicated

• The site has recurring traffic incidents

• Ownership or approval requirements are unclear

The purpose is to choose a suitable traffic-management treatment, not simply install a raised obstacle.

Site Information to Have Ready

Before requesting a quote or confirming quantities, gather:

• Photos of the proposed installation area

• Road or aisle width

• A simple sketch showing the intended location

• Vehicle types using the route

• Approximate traffic frequency

• Turning and reversing movements

• Pedestrian crossings and access points

• Drainage and surface condition

• Emergency and service vehicle requirements

• Existing signs and markings

• Property ownership and approval status

• Any previous traffic incidents or complaints

These details give Rubbr or a qualified installer a clearer picture of the application than road width alone.

Frequently Asked Questions

Are speed cushions better than speed humps?

Not necessarily. Speed cushions provide a targeted raised treatment, while speed humps create continuous coverage. The right choice depends on the road layout and vehicles using the site.

Can emergency vehicles drive over speed cushions?

Some designs may accommodate particular wheel tracks differently, but compatibility depends on the actual vehicles and installation geometry. It should be assessed rather than assumed.

How many speed hump sections make one metre?

Four of Rubbr’s rubber middle sections make approximately one metre. Each section is 250mm wide. Allow for compatible end pieces separately.

Can you install speed bumps on a private road?

Only after confirming ownership, relevant approvals and site suitability. Private roads can still have safety, access and operational requirements.

Final Thoughts

The difference between speed cushions vs speed humps comes down to how they cover the road and how vehicles cross them.

Speed cushions can suit a targeted traffic-calming layout, while speed humps provide a continuous raised treatment across the intended vehicle path.

For car parks, consider pedestrian movements, parking aisles and turning space. For warehouses and worksites, focus on vehicle types, loads and operational routes. For private roads, account for access, neighbouring properties and approvals.

Once you have an assessed layout, you can work out the modular components you need.

Rubbr’s traffic calming and safety products include matching speed cushion middle and end pieces, rubber speed hump middle sections and compatible end pieces.

If you are unsure which system suits your site, prepare photos, dimensions, vehicle details and a simple layout sketch before requesting advice. This makes it easier to identify the appropriate components and avoid ordering a system that does not match the installation.