20mph Speed Roundel

Professional Speed Limit Markings for Safer Roads

A 20mph speed roundel gives drivers a clear, visible reminder of the legal speed limit at the exact point they need it - on the road surface. Used at zone entry points and repeated at regular intervals, it helps reinforce a lower speed limit, reduce speeds, and improve safety for pedestrians, cyclists, residents, and other road users.

Why You’ll Love It

• High-visibility thermoplastic construction – Premium road markings stay visible in changing road conditions and help drivers recognise the maximum speed at a glance.Manufactured from durable preformed thermoplastic, these 20mph road markings provide long-lasting visibility and fast installation.

• Quick, easy application – Designed for efficient installation with reduced road closure time and minimal disruption to traffic flow, local businesses, residents, and emergency services.

• Supports safer 20mph zones – 20mph roundels are typically used in residential areas and around schools to protect vulnerable road users, including people walking and children travelling to school.

• Built to withstand heavy traffic – Weather-resistant materials stand up to heavy traffic, vehicles, and daily wear for years under normal traffic conditions.

• Cost-effective traffic calming support – Roundels act as critical components in urban traffic management, serving as cost-effective visual cues alongside speed limit signs, road signs, and repeater signs.

A typical car travelling at 20mph can stop in around 12 metres, whereas at 30mph, the stopping distance increases to 23 metres. Research conducted by Ready Set Supplied indicates that for every 1mph reduction in average speed, collision frequency decreases by around 5%, showing the real safety value of slower speeds.

What Makes It Different

Most road markings fade quickly, lose visibility at night, or fail to give motorists a clear enough reminder of the new limit. Our 20mph Speed Roundel is built for professional highways use, combining durability, clarity, and compliance.

• Superior retroreflective glass beads – Improve night-time visibility compared with standard paint markings, helping drivers maintain appropriate driving speeds.

• Preformed thermoplastic design – Creates a consistent roundel shape, clean finish, and professional appearance for residential streets, schools, estates, towns, and local authority schemes.

• Multiple speed variations available – Choose from 5mph, 10mph, 20mph, 30mph, 40mph, 50mph, and 60mphroundels for complete speed management across different zones.

How It Works

1. Prepare and position the roundel
   Clean the road surface, check the direction of traffic, and place the 20mph speed roundel at the boundary, entry point, or required repeater location. Roundels are painted at the entry points of a 20mph zone or limit to create a highly visible gateway.

2. Apply heat to bond the marking
   Use a propane torch to activate the thermoplastic adhesion. The marking bonds to the road surface, creating a durable speed limit indication that works in combination with signage, repeater signs, and traffic calming measures.

3. Create an immediate visual reminder
   Once applied, the roundel gives drivers a clear speed message throughout the 20mph area. Roundels are painted on the road at regular intervals to act as physical reminders throughout the 20mph area.

20mph speed limits should be part of a package with other measures to manage vehicle speeds and improve road safety, and should not be set in isolation. Successful 20mph zones are generally self-enforcing, meaning existing road conditions and measures lead to compliance without excessive reliance on police enforcement.

Product Details

• Material / Format: Premium preformed thermoplastic with embedded retroreflective glass beads.

• Dimensions / Specs: Size options available for different road types, highways, private roads, and car parks.

• Colour: White numerals

• Installation: Requires propane torch and basic surface preparation tools.

• Durability: Designed to withstand heavy traffic and harsh weather for long-term visibility.

• Speed options: 5mph, 10mph, 20mph, 30mph, 40mph, 50mph, and 60mph.

Who It’s For

Ideal for:

• Local councils and any local authority managing 20mph zones

• Highway contractors and road marking specialists

• Schools, residential areas, and local communities

• Private estate managers, car parks, and industrial sites

• Transport teams looking to improve traffic flow while improving safety

Traffic authorities should only consider 20mph limits where there is local support, particularly on major streets with significant pedestrian and cyclist traffic, and in residential areas where the characteristics of the street are suitable.

In Wales, the default speed limit on restricted roads with streetlights is 20mph, unless signed otherwise. In England, Scotland, and Northern Ireland, the default urban speed limit remains 30mph.

Frequently Asked Questions

How long does a 20mph speed roundel last?
Thermoplastic road markings are built for long-term use and designed to withstand heavy traffic, weather, and repeated vehicle movement.

Can I install it myself?
Yes, if you have suitable tools and experience. Easy application requires a clean surface, correct positioning, and a propane torch for bonding.

Do you offer other speed limit roundels?
Yes. We supply 5mph, 10mph, 20mph, 30mph, 40mph, 50mph, and 60mph roundels.

Is it legal and compliant?
Yes, when used within a properly signed and authorised scheme. 20mph zones require traffic calming measures such as speed humps or chicanes, and at least one calming feature must be present within the zone. Traffic calming measures must be installed so no point within a 20mph zone is further than 50 metres from a traffic calming feature, sign, or marking.

The majority of traffic calming measures in use are speed humps, tables, cushions, or rumble devices, termed vertical deflections. Traffic calming measures can also range from substantive engineering measures to lighter-touch road surface treatments.

What safety difference can 20mph schemes make?
The safety impacts of 20mph initiatives show substantial reductions in collisions and casualties. 20mph schemes are associated with a 34% reduction in people killed or seriously injured and a 75% reduction in child fatalities. Research shows that 20mph zones can reduce overall average annual collision frequency by around 60%, particularly reducing injuries to children by up to two-thirds.

Ready to Upgrade?

Stop relying on faded markings, unclear signs, or inconsistent speed messages. Choose a professional 20mph Speed Roundel to create a visible, durable, and compliant reminder of the new speed limit.

Secure ordering. Fast delivery. Professional quality for safer roads.