Diagram 2901 – Start of Motorway Regulations, Including the National Speed Limit

The Diagram 2901 sign is a critical motorway entry sign that marks the start of motorway regulations, including the national speed limit and specific traffic rules applicable to motorways. Featuring a blue rectangular background with a white motorway symbol, this sign is essential for informing drivers that they are entering a motorway, where special driving laws and restrictions apply.

This sign plays a vital role in road safety and traffic management, ensuring that motorists adjust their driving behaviour accordingly when entering a motorway environment.

Key Features and Benefits

🚗 Indicates the Beginning of Motorway Rules

Signals that motorway-specific traffic laws now apply.
Ensures drivers are aware of the higher speed limits and driving conditions.
Prepares road users for controlled access and restricted vehicle types.

⚠️ National Speed Limit and Road Regulations Apply

Enforces the standard motorway speed limit (70 mph for cars, 60 mph for lorries and trailers) unless otherwise stated.
No stopping or parking on the carriageway, hard shoulder, or slip roads (except in emergencies).
Pedestrians, cyclists, and certain slow-moving vehicles are prohibited from entering motorways.

👀 Highly Visible and Easy to Recognize

Blue background with a white motorway symbol ensures immediate recognition.
Designed with retroreflective materials for visibility in all lighting conditions.
Often positioned at motorway entry slip roads and junctions.

Where is the Diagram 2901 Sign Used?

The Diagram 2901 sign is placed at every entrance to a motorway, ensuring that drivers understand the change in road regulations. Common locations include:

Motorway entry slip roads 🚗 – Informing drivers they are now entering a motorway.
Junctions where an A-road transitions into a motorway 🛣️ – Ensuring a smooth transition to motorway driving.
Service station exits leading back onto the motorway ⛽ – Reinforcing motorway rules after a stop.
Interchanges between different motorways 🔀 – Signifying a continuation of motorway regulations.

By providing clear motorway entry information, this sign helps drivers adjust their speed, lane discipline, and driving behaviour appropriately.

Understanding Motorway Regulations

The Diagram 2901 sign is part of a system of motorway signage that ensures compliance with UK driving laws. Key motorway regulations include:

✅ National speed limit applies (70 mph for cars, unless otherwise indicated).
✅ No stopping, parking, or reversing, except in emergencies.
✅ No pedestrians, cyclists, or slow-moving agricultural vehicles.
✅ Motorway lanes are controlled by additional signage (e.g., variable speed limits, lane closures).

Additional signs often found alongside Diagram 2901 include:

Diagram 2919.1 – “End of Motorway” sign (indicating motorway regulations no longer apply).
Diagram 2908 – “Motorway Exit” sign (showing upcoming junctions).
Diagram 2932 – “Lane Control Signs” (indicating lane restrictions or closures).

Durability and Compliance

To ensure long-term effectiveness and compliance with UK motorway regulations, our Diagram 2901 sign is made from high-quality, durable materials:

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

This sign is essential for highway agencies, road planners, and motorway operators to clearly define motorway entry points and enforce regulations effectively.

Who Needs This Sign?

The Diagram 2901 sign is widely used by:

✅ Highway agencies and motorway operators – Ensuring compliance with motorway laws.
✅ Local councils and road authorities – Managing junctions where roads transition to motorways.
✅ Traffic enforcement teams – Monitoring motorway access points.
✅ Construction and infrastructure developers – Installing motorway signage as part of road projects.

By correctly placing and maintaining this sign, authorities can reduce confusion, improve road safety, and enhance traffic efficiency on UK motorways.

Summary

✔️ Marks the start of motorway regulations, including the national speed limit 🛣️
✔️ Indicates that motorway-specific rules apply (e.g., no pedestrians, no stopping) 🚗
✔️ Highly visible with a clear blue and white motorway symbol 👀
✔️ Used at motorway entrances, slip roads, and service station exits 🚦
✔️ Fully compliant with UK road regulations (TSRGD) ✅

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Additional resources:

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