Diagram 674 – Entrance to a 20 mph Speed Limit Zone

The Diagram 674 sign is a regulatory speed limit sign used to indicate the start of a 20 mph speed limit zone. Featuring a red-bordered circular “20” sign with the word “ZONE” beneath it, this sign informs drivers that they are entering an area where a 20 mph speed limit is enforced throughout.

This sign is commonly used in residential areas, school zones, and high-pedestrian traffic areas, helping to reduce vehicle speeds, improve road safety, and protect vulnerable road users.

Key Features and Benefits

🚗 Encourages Lower Speeds for Safer Roads

Clearly informs drivers that a 20 mph speed limit is in effect.
Helps prevent speeding in pedestrian-heavy areas, reducing the risk of accidents.
Reinforces speed calming measures, such as speed bumps and narrowed roads.

⚠️ Improves Safety for Pedestrians and Cyclists

Commonly placed in school zones, residential neighborhoods, and town centres.
Reduces the severity of accidents involving pedestrians and cyclists.
Encourages drivers to adopt safer driving habits in shared spaces.

👀 Highly Visible and Easy to Recognize

Red-bordered circular speed limit sign ensures immediate attention.
Bold black “ZONE” text reinforces that the limit applies throughout the area.
Made with retroreflective materials for visibility in all lighting conditions.

Where is the Diagram 674 Sign Used?

The Diagram 674 sign is installed at the entrance to designated 20 mph zones, ensuring that drivers are aware of the speed restriction. Common placements include:

School zones and residential streets 🏡 – Protecting children and local residents.
Town and city centres 🏙️ – Managing traffic in high-footfall areas.
Near playgrounds and parks 🎠 – Ensuring safe driving near family spaces.
Hospital and healthcare zones 🏥 – Reducing noise and improving safety for patients.
Pedestrian priority areas 🚶‍♂️ – Supporting safer streets for walkers and cyclists.

By defining clear 20 mph zones, this sign helps to enhance safety and encourage responsible driving.

Understanding Speed Limit Zone Signs

The Diagram 674 sign is part of a series of speed control signs used to regulate speed limits in urban and residential areas. It works alongside:

✅ Diagram 675 – “End of 20 mph Zone” (indicates where the 20 mph limit ends).
✅ Diagram 670 – “Speed Limit Sign” (used for standalone 20 mph limits).
✅ Diagram 880 – “Speed Camera and 30 mph Limit Reminder” (used in enforcement areas).

These signs reinforce speed restrictions and improve compliance, making roads safer for all users.

Durability and Compliance

To ensure long-lasting performance and compliance with UK traffic regulations, our Diagram 674 sign is made from high-quality, durable materials:

✔️ Retroreflective coating for visibility at night 🌙
✔️ Weatherproof aluminum or composite material 🌧️
✔️ Rust and corrosion-resistant for long-term use 🏗️
✔️ Available in multiple sizes for different road environments 📏
✔️ Fully compliant with UK TSRGD regulations ✅

This sign is essential for local councils, highway agencies, and urban planners managing low-speed zones and traffic calming areas.

Who Needs This Sign?

The Diagram 674 sign is widely used by:

✅ Local councils and road authorities – Implementing 20 mph speed zones in urban areas.
✅ School districts and residential communities – Enhancing road safety near homes and schools.
✅ City planners and traffic engineers – Managing pedestrian-friendly zones.
✅ Law enforcement agencies – Ensuring compliance with speed restrictions.

By placing this sign at strategic locations, authorities can reduce speeding, prevent accidents, and promote safer communities.

Summary

✔️ Marks the entrance to a 20 mph speed limit zone 🚗
✔️ Encourages lower speeds for pedestrian safety 🚶‍♂️
✔️ Used in school zones, residential areas, and town centres 🏡
✔️ Highly visible with reflective materials for night-time use 🌙
✔️ Fully compliant with UK road regulations (TSRGD) ✅

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Additional resources:

Driving rules