# Martyn’s Law Road Closures: Plan, Authorize & Document

> Learn how to plan, authorize, and document Martyn's Law road closures. OnePlan helps you build a defensible perimeter map fast. Start today.

**Published:** 2026-09-21 | **Updated:** 2026-10-31 | **Author:** oneplansync
**URL:** https://www.oneplan.io/articles/martyns-law-road-closures-guide
**Type:** post

**Categories:** Event safety and compliance

![Martyn’s Law Road Closures: Plan, Authorize & Document](https://oneplan.sites.aigrowthagent.co/wp-content/uploads/sites/80/2026/09/1788789637631-d8f0f8d0e485-1024x572.webp)

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## Content

*Written by: Paul Foster, Founder, CEO, OnePlan | Last updated: October 12, 2026*

## Key Takeaways for Martyn’s Law Road Closures

- Enhanced Tier risk assessments often point to temporary vehicle exclusion zones as a proportionate way to protect large events.
- The Enhanced Tier threshold of 800 people triggers documented perimeter measures and physical security duties for qualifying events.
- Temporary Traffic Regulation Orders (TTROs) under the Road Traffic Regulation Act 1984 provide the legal route for event-related road closures and need highway authority and police approval.
- Effective perimeter planning uses to-scale mapping, accurate HVM placement, crowd capacity calculations, flow modeling, and Bills of Quantities for approvals.
- OnePlan lets event teams design compliant road closure perimeters on a single collaborative platform with to-scale mapping, barrier placement, capacity tools, and exportable documentation.

[Book a demo with OnePlan](https://www.oneplan.io/book-demo/?utm_term=martyns-law-road-closures-guide&utm_campaign=ai_growth_agent)

## The Misconception About Martyn’s Law and Road Closures

[The Terrorism (Protection of Premises) Act 2025 received Royal Assent on 3 April 2025 and does not require a specific security product, physical alteration, or road closure. Measures must be reasonably practicable and proportionate to the circumstances.](https://gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance) The Security Industry Authority (SIA) is the appointed regulator, and [commencement of Martyn’s Law is expected in Spring 2027, with the SIA working to that date as the point at which it assumes its statutory regulatory duties.](https://gov.uk/government/publications/sia-business-plan-2026-to-2027/sia-business-plan-2026-to-2027)

Enhanced Tier duties around monitoring, movement, and physical security make a managed vehicle exclusion zone the most proportionate response for many large events, so temporary road closures are becoming more common. For wider Martyn’s Law compliance context, see OnePlan’s [Martyn’s Law Event Planning: A Step-by-Step Guide](https://oneplan.io/articles/martyns-law-event-planning/?utm_term=martyns-law-road-closures-guide&utm_campaign=ai_growth_agent) and [Martyn’s Law Crowd Management: Practical Guide for UK Venues](https://oneplan.io/articles/martyns-law-crowd-management/?utm_term=martyns-law-road-closures-guide&utm_campaign=ai_growth_agent). This article focuses on the road network, closure perimeter, and traffic management.

## When a Martyn’s Law Event Needs a Road Closure

[The Standard Tier covers qualifying premises that can reasonably expect 200 to 799 individuals, including staff, to be present at the same time from time to time. The Enhanced Tier applies where 800 or more individuals can reasonably be expected to be present at any one time.](https://gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance) At the Enhanced Tier threshold, the full suite of physical-security duties, including documented perimeter measures, applies.

[The capacity test uses a reasonable expectation of simultaneous attendance, not just the building’s maximum licensed capacity. The phrase “from time to time” means occasionally, so a premises may qualify even if the threshold is reached only once or twice a year.](https://gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance)

A road closure becomes operationally necessary when the responsible person’s risk assessment concludes that vehicle access to the event boundary cannot be controlled adequately without physically excluding traffic. That conclusion becomes more likely once an event crosses the Enhanced Tier threshold.

## How Martyn’s Law Treats Open Roads and Public Highways

[Schedule 2 to the Terrorism (Protection of Premises) Act 2025 excludes open-access parks, gardens, and other open-air premises used for recreation or leisure that do not have measures to secure or check restricted access.](https://gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance) General open-access highways and public parks therefore sit outside the baseline scope of the Act.

Designation changes that position. When a road or public space is designated as the venue for a boundary-controlled event, with ticketed, managed, or physically restricted access, it becomes the premises for the purposes of the Act and is subject to the relevant tier’s security duties. [Limiting access to ticket-holders, members, or guests still counts as publicly accessible under the Act.](https://gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance) In practice, a street festival with open access may sit outside scope, while a ticketed event on the same street with controlled entry points sits firmly within it.

## Temporary Traffic Regulation Orders for Event Closures

[Under the Road Traffic Regulation Act 1984, a Temporary Traffic Regulation Order (TTRO) can be introduced by a highway authority to impose temporary restrictions or a road closure on the highway to facilitate works, cleansing operations, or to safely facilitate events on the highway.](https://nelincs.gov.uk/streets-travel-and-parking/traffic-regulation-orders)

[Section 16A of the Road Traffic Regulation Act 1984 allows a UK council to temporarily close or restrict roads to enable organised events to take place safely. It covers sporting events, community events, street parties, festivals, public celebrations, and large gatherings.](https://monmouthshire.gov.uk/event-road-closures-section-16a-town-police-clauses-act) For smaller or shorter-duration events, [Section 21 of the Town Police Clauses Act 1847 offers a more flexible alternative where a full Section 16A order would be disproportionate.](https://monmouthshire.gov.uk/event-road-closures-section-16a-town-police-clauses-act)

The local highway authority signs off on the TTRO. Where the closure affects traffic management on the public highway, police agreement is also required, and only law enforcement, or persons operating under their direction and authority, can legally regulate traffic on the public highway. A planned closure follows the full TTRO process. An emergency closure can be authorized more rapidly but is time-limited. [An Emergency Traffic Regulation Order, used for emergency works such as a burst pipe, sewer collapse, or a wall fallen on the highway, can be made for up to 21 days.](https://nelincs.gov.uk/streets-travel-and-parking/traffic-regulation-orders)

Once the TTRO route is confirmed, the closure itself has to be physically designed, and that is where hostile vehicle mitigation and perimeter layout come in. For further statutory detail, see the [Home Office statutory guidance for the Terrorism (Protection of Premises) Act 2025](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025) and [ProtectUK’s HVM guidance](https://protectuk.police.uk/advice-and-guidance/risk/hostile-vehicle-mitigation-hvm).

## Hostile Vehicle Mitigation and Perimeter Layout

[HVM measures may be passive (static) or active (security controlled) and can be installed on a permanent or temporary basis. They should meet appropriate standards for vehicle impact performance, design, and installation.](https://protectuk.police.uk/advice-and-guidance/risk/hostile-vehicle-mitigation-hvm) For a temporary event perimeter, the toolkit typically includes surface-mounted bollards, rated gates, crowd barriers, managed pedestrian zones, and vehicle access control points (VACPs).

**With OnePlan, you can place barriers, tents, and more inside its integrated, live planning tool**

ISO 22343-1:2023 is the current international standard for vehicle impact testing and performance rating, while ISO 22343-2:2023 provides guidance on the selection, installation, and use of vehicle security barriers, superseding legacy regimes such as PAS 68 and IWA 14-1.

Martyn’s Law hostile vehicle mitigation planning relies on accurate layout. The width and positioning of a bollard array, pedestrian desire lines, and the management of vehicle access points all interact. NPSA research found that properly arranged bollards did not adversely affect pedestrian flows under normal conditions, including at peak times. Separate evacuation trials found their effect on exit flow to be insignificant at the lower crowd density tested. Getting that arrangement right on paper, before a single barrier reaches site, is where map-based planning pays off. For road event perimeter planning specifically, see OnePlan’s [Martyn’s Law Marathon Route Planning: Security Guide](https://oneplan.io/articles/protect-duty-marathon-route-planning/?utm_term=martyns-law-road-closures-guide&utm_campaign=ai_growth_agent).

## Step-By-Step: Planning a Road Closure Perimeter for Enhanced Tier Events

This method suits any Enhanced Tier event that needs a managed vehicle exclusion zone. Each step produces a document that feeds directly into the evidence pack for council, highway authority, police, and Safety Advisory Group approval.

1. **Map the perimeter on a live satellite or street map.** Open OnePlan and navigate to your venue. The base layer is a zoomable satellite or street map built on leading GIS technology, so every measurement is geo-accurate from the first click. Draw the proposed closure boundary directly on the map.
2. **Place HVM, barriers, and fencing to scale.** Drag and drop bollards, crowd barriers, fencing, gates, and vehicle access control points from OnePlan’s object library. Every object stays accurately to scale as you zoom, so a 2-metre bollard spacing reads correctly whether you view the full perimeter or a single entry point.
3. **Calculate the standing crowd capacity of the managed pedestrian zone.** Outline the pedestrian area and OnePlan’s crowd capacity calculator instantly returns a standing capacity figure based on a selectable people-per-square-metre density. OnePlan calculates standing crowd capacity only and does not calculate seated capacity.
4. **Model ingress and egress flow.** Use OnePlan’s free arrival and exit calculators, available at [calculators.oneplan.io/arrival](https://calculators.oneplan.io/arrival?utm_term=martyns-law-road-closures-guide&utm_campaign=ai_growth_agent) and [calculators.oneplan.io/exit/calculator](https://calculators.oneplan.io/exit/calculator?utm_term=martyns-law-road-closures-guide&utm_campaign=ai_growth_agent), to estimate queue length, queue time, and exit capacity for each access point in your perimeter design.
5. **Export a Bill of Quantities for exact barrier and fencing counts.** Everything placed on the map saves automatically to OnePlan’s Bill of Quantities. Export it to Excel or CSV to create a precise inventory of every barrier segment, bollard, gate, and sign for procurement and the evidence pack.

[Stadium, a UK security and traffic management firm, used OnePlan to plan Coventry Moves, a 12-hour event with roughly 400 road closures across 7 procession routes and 110 stakeholders. They reduced the time to create eight traffic management maps from one full day in CAD to about 2 hours.](https://www.oneplan.io/case-studies/events-and-safety-how-stadium-managed-traffic-for-one-of-the-uks-biggest-events-in-oneplan/?utm_term=martyns-law-road-closures-guide&utm_campaign=ai_growth_agent) That kind of efficiency shows the value of a to-scale, map-based approach.

![Festival planning example inside OnePlan: the base layer is a zoomable satellite or street map, and everything placed on it (tents, stages, crowd barriers, toilets, vehicles, staff, signage, routes) stays accurately to scale as you zoom](https://cdn.aigrowthmarketer.co/1780620510054-c5429587ebad.png)**Festival planning example inside OnePlan: the base layer is a zoomable satellite or street map, and everything placed on it (tents, stages, crowd barriers, toilets, vehicles, staff, signage, routes) stays accurately to scale as you zoom**

[See how OnePlan builds your closure perimeter in a 15 minute demo](https://www.oneplan.io/book-demo/?utm_term=martyns-law-road-closures-guide&utm_campaign=ai_growth_agent)

## The Evidence Pack Required for Road Closure Approval

A road closure for a Martyn’s Law Enhanced Tier event needs sign-off from the local highway authority, police, and, in the UK, the Safety Advisory Group (SAG). A complete event safety submission commonly includes an Event Management Plan, comprehensive risk assessment, site plan, emergency or contingency plan, medical plan, and communications plan. SAGs may also request a Traffic Management Plan, counter-terrorism assessment, and crowd-management plan.

For the road closure specifically, the evidence pack should include:

- A to-scale site plan showing the closure boundary, HVM positions, barrier lines, gates, and vehicle access control points
- A Traffic Management Plan covering vehicle and pedestrian segregation, traffic flow, signage, marshal positions, emergency access corridors, and diversion routes
- A Bill of Quantities listing every physical object in the perimeter by type and count
- Standing crowd capacity figures for the managed pedestrian zone, with the density assumption stated
- Ingress and egress flow estimates for each access point
- The TTRO application or Section 16A order reference, with the highway authority and police contacts named
- A documented risk assessment explaining why the chosen HVM measures are proportionate to the assessed threat

Temporary Traffic Regulation Orders may require at least eight weeks’ notice, with 13 weeks recommended, so organizers should verify the exact local authority timetable. [In some London boroughs, road closure or traffic management applications require up to three months’ notice.](https://walthamforest.gov.uk/businesses/safety-advisory-group) Because lead times are long, the evidence pack has to be ready well before the event. A to-scale OnePlan export, high-resolution and print-ready up to A0, gives the highway authority and SAG a plan they can review immediately instead of a hand-drawn sketch or a non-scaled screenshot.

OnePlan’s plans have supported approvals at events ranging from community festivals to the [Tour of Britain](https://www.oneplan.io/case-studies/how-the-tour-of-britain-was-planned-in-oneplan/?utm_term=martyns-law-road-closures-guide&utm_campaign=ai_growth_agent), where [SweetSpot achieved a 75% reduction in site visits and saved almost 300 hours in planning the multi-stage event by reducing the time spent on drawings for each stage from three days to a day and a half.](https://www.oneplan.io/case-studies/how-the-tour-of-britain-was-planned-in-oneplan/?utm_term=martyns-law-road-closures-guide&utm_campaign=ai_growth_agent)

**Build your event as a team inside OnePlan: design and manage any physical space on one integrated, live plan**

## Martyn’s Law Road Closures: Timeline From October 2026 to Spring 2027

[Martyn’s Law has not yet come into force. The exact commencement dates will be determined by the Home Office and Parliament through statutory instruments, and the UK government expects Martyn’s Law to go live in Spring 2027.](https://gov.uk/government/news/martyns-law-what-comes-next-and-how-to-get-involved) The transitional period is the time to design and document your closure perimeter before enforcement begins. Use this practical timeline:

- **October–December 2026:** Identify whether your event falls within scope of the Terrorism (Protection of Premises) Act 2025 using the [Home Office statutory guidance](https://gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025). Begin mapping proposed closure perimeters in OnePlan and place HVM and barrier lines to scale on a live satellite map.
- **January–March 2027:** Finalize your evidence pack, including the to-scale site plan, Traffic Management Plan, Bill of Quantities, and crowd capacity figures. Engage your local highway authority to confirm the TTRO or Section 16A process and lead times. Submit documentation to your Safety Advisory Group for review.
- **Spring 2027:** [SIA enforcement begins, with the SIA’s stated key deliverable to “be ready to go live when the legislation is commenced, working to Spring 2027.”](https://gov.uk/government/publications/sia-business-plan-2026-to-2027/sia-business-plan-2026-to-2027) Ensure your compliance document is complete, your TTRO is in place, and your perimeter plan is documented and shareable.

The table below compares three approaches against the capabilities a closure perimeter demands: to-scale accuracy on a live map, event-specific objects with an automatic Bill of Quantities, and a short learning curve. Only OnePlan delivers all three.

| Approach | To Scale On Live Map | Event-Specific Objects And Bill Of Quantities | Easy To Learn |
| --- | --- | --- | --- |
| Manual tools (PowerPoint, Excel, Google Maps) | No | No | Yes |
| Complex engineering software (CAD) | Yes | No | No |
| OnePlan | Yes | Yes | Yes |

## Conclusion: Turn Your Road Closure Plan Into a Shareable, Defensible Map

Enhanced Tier duties under Martyn’s Law make temporary closures, HVM barriers, managed pedestrian zones, and vehicle checkpoints a practical reality for events at or above the 800-capacity threshold. The legal route runs through a Temporary Traffic Regulation Order under the Road Traffic Regulation Act 1984, agreed with the local highway authority and police. The evidence pack that secures approval, including a to-scale site plan, Traffic Management Plan, Bill of Quantities, and crowd capacity figures, matches the outputs you create in OnePlan as you design the event.

OnePlan gives UK event organizers, council events officers, and traffic and security leads a to-scale, map-based workspace to design a closure perimeter, place HVM and barriers to scale, calculate standing crowd capacity, model ingress and egress flow, and export a complete Bill of Quantities. All of this sits in one collaborative plan, without CAD software or an engineering background. The platform has powered more than 200,000 events across 150 countries, from community festivals to the Paris 2024 Olympic Games, and your first event is free.

[Start your first free event in OnePlan or book a 15 minute demo](https://www.oneplan.io/book-demo/?utm_term=martyns-law-road-closures-guide&utm_campaign=ai_growth_agent)

## Frequently Asked Questions

### Does Martyn’s Law Require Permanent Road Closures?

The Terrorism (Protection of Premises) Act 2025 does not mandate permanent road closures. The Act requires responsible persons for Enhanced Tier premises and qualifying events to implement reasonably practicable public protection measures. For many events, that means temporary closures, HVM barriers, and managed pedestrian zones during the event window, rather than permanent changes to the road network.

### Who Authorizes a Temporary Road Closure for an Event in the UK?

The local highway authority authorizes a Temporary Traffic Regulation Order (TTRO) under the Road Traffic Regulation Act 1984 or an event-specific closure under Section 16A of the same Act. Police agreement is required where the closure affects traffic on the public highway. For events in England, Wales, Scotland, or Northern Ireland, the process runs through the relevant council as highway authority, while trunk roads are handled by the relevant national transport authority. Lead times vary by council, so confirm requirements early, as some authorities require up to three months’ notice for road closure applications.

### What Is the Enhanced Tier Capacity Threshold Under Martyn’s Law?

The Enhanced Tier threshold is 800 or more individuals present at the same time, including staff and workers. The Standard Tier covers 200 to 799. The capacity assessment uses a reasonable expectation of simultaneous attendance, not just the venue’s maximum licensed capacity, and includes all staff on site.

### How Do I Calculate Standing Crowd Capacity for a Managed Pedestrian Zone?

OnePlan’s crowd capacity calculator lets you outline any area on a to-scale map and instantly returns a standing capacity figure based on a selectable people-per-square-metre density. OnePlan calculates standing crowd capacity only and does not calculate seated capacity. For ingress and egress flow modeling, use OnePlan’s free arrival calculator at calculators.oneplan.io/arrival and exit calculator at calculators.oneplan.io/exit/calculator, which estimate queue length, queue time, and exit capacity based on your access point configuration.

### What Evidence Does a Safety Advisory Group Need for a Road Closure?

[Safety Advisory Groups (SAGs) are non-statutory multi-agency forums that advise on the safe planning and delivery of public events, such as the Waltham Forest SAG in London.](https://walthamforest.gov.uk/businesses/safety-advisory-group) For a road closure, a SAG will typically expect to see:

- A to-scale site plan showing the closure boundary, HVM positions, and barrier lines
- A Traffic Management Plan covering vehicle and pedestrian segregation, signage, marshal positions, and emergency access corridors
- A Bill of Quantities listing every physical object in the perimeter
- Standing crowd capacity figures for the managed pedestrian zone
- Ingress and egress flow estimates
- The TTRO or Section 16A application reference

A to-scale OnePlan export, high-resolution and print-ready, gives the SAG a plan they can review immediately and supports a faster, better-documented approval process.

### Can I Plan a Road Closure Perimeter Without CAD Software?

OnePlan is a drag-and-drop, browser-based platform built for events and operations professionals rather than engineers. You can sign up and begin placing barriers, bollards, gates, and fencing to scale on a live satellite map within seconds, with no engineering background or specialist training required. The platform automatically generates a Bill of Quantities from everything placed on the map and exports a high-resolution, print-ready plan for permits and stakeholder meetings. CAD software is accurate but carries a steep learning curve and significant cost, while OnePlan delivers to-scale accuracy with far less complexity.

### How Does OnePlan Help With Martyn’s Law Road Closure Planning?

OnePlan is the single platform where you can map a closure perimeter on a live satellite or street map, place HVM barriers, bollards, fencing, gates, and vehicle access control points to scale, calculate the standing crowd capacity of the managed pedestrian zone, model ingress and egress flow using the free arrival and exit calculators, and export a complete Bill of Quantities for procurement and the evidence pack. Every object stays accurately to scale as you zoom, so a plan built in OnePlan is defensible in a Safety Advisory Group meeting, a highway authority submission, and a police briefing. Your first event is free, with no payment details required to get started.

## Read Next

- [How To Plan Road Closures Under Protect Duty: UK Guide](https://oneplan.io/articles/protect-duty-road-closure-map/?utm_term=martyns-law-road-closures-guide&utm_campaign=ai_growth_agent)
- [Martyn’s Law Event Planning: A Step-by-Step Guide](https://oneplan.io/articles/martyns-law-event-planning/?utm_term=martyns-law-road-closures-guide&utm_campaign=ai_growth_agent)
- [How To Build a Martyn’s Law Emergency Plan for UK Events](https://oneplan.io/articles/martyns-law-emergency-planning-guide/?utm_term=martyns-law-road-closures-guide&utm_campaign=ai_growth_agent)
- [Martyn’s Law Explained: A Guide for Event Organizers](https://oneplan.io/articles/what-is-martyns-law/?utm_term=martyns-law-road-closures-guide&utm_campaign=ai_growth_agent)
- [Martyn’s Law Crowd Management: Practical Guide for UK Venues](https://oneplan.io/articles/martyns-law-crowd-management/?utm_term=martyns-law-road-closures-guide&utm_campaign=ai_growth_agent)

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## Structured Data

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  **MainEntity:**

    **Question:**

    - **Name:** Does Martyn's Law Require Permanent Road Closures?
      **Answer:**

      - **Text:** The Terrorism (Protection of Premises) Act 2025 does not mandate permanent road closures. The Act requires responsible persons for Enhanced Tier premises and qualifying events to implement reasonably practicable public protection measures. For many events, that means temporary closures, HVM barriers, and managed pedestrian zones during the event window, rather than permanent changes to the road network.
    **Question:**

    - **Name:** Who Authorizes a Temporary Road Closure for an Event in the UK?
      **Answer:**

      - **Text:** The local highway authority authorizes a Temporary Traffic Regulation Order (TTRO) under the Road Traffic Regulation Act 1984 or an event-specific closure under Section 16A of the same Act. Police agreement is required where the closure affects traffic on the public highway. For events in England, Wales, Scotland, or Northern Ireland, the process runs through the relevant council as highway authority, while trunk roads are handled by the relevant national transport authority. Lead times vary by council, so confirm requirements early, as some authorities require up to three months' notice for road closure applications.
    **Question:**

    - **Name:** What Is the Enhanced Tier Capacity Threshold Under Martyn's Law?
      **Answer:**

      - **Text:** The Enhanced Tier threshold is 800 or more individuals present at the same time, including staff and workers. The Standard Tier covers 200 to 799. The capacity assessment uses a reasonable expectation of simultaneous attendance, not just the venue's maximum licensed capacity, and includes all staff on site.
    **Question:**

    - **Name:** How Do I Calculate Standing Crowd Capacity for a Managed Pedestrian Zone?
      **Answer:**

      - **Text:** OnePlan's crowd capacity calculator lets you outline any area on a to-scale map and instantly returns a standing capacity figure based on a selectable people-per-square-metre density. OnePlan calculates standing crowd capacity only and does not calculate seated capacity. For ingress and egress flow modeling, use OnePlan's free arrival calculator at calculators.oneplan.io/arrival and exit calculator at calculators.oneplan.io/exit/calculator, which estimate queue length, queue time, and exit capacity based on your access point configuration.
    **Question:**

    - **Name:** What Evidence Does a Safety Advisory Group Need for a Road Closure?
      **Answer:**

      - **Text:** Safety Advisory Groups (SAGs) are non-statutory multi-agency forums that advise on the safe planning and delivery of public events, such as the Waltham Forest SAG in London. For a road closure, a SAG will typically expect to see: A to-scale site plan showing the closure boundary, HVM positions, and barrier lines A Traffic Management Plan covering vehicle and pedestrian segregation, signage, marshal positions, and emergency access corridors A Bill of Quantities listing every physical object in the perimeter Standing crowd capacity figures for the managed pedestrian zone Ingress and egress flow estimates The TTRO or Section 16A application reference A to-scale OnePlan export, high-resolution and print-ready, gives the SAG a plan they can review immediately and supports a faster, better-documented approval process.
    **Question:**

    - **Name:** Can I Plan a Road Closure Perimeter Without CAD Software?
      **Answer:**

      - **Text:** OnePlan is a drag-and-drop, browser-based platform built for events and operations professionals rather than engineers. You can sign up and begin placing barriers, bollards, gates, and fencing to scale on a live satellite map within seconds, with no engineering background or specialist training required. The platform automatically generates a Bill of Quantities from everything placed on the map and exports a high-resolution, print-ready plan for permits and stakeholder meetings. CAD software is accurate but carries a steep learning curve and significant cost, while OnePlan delivers to-scale accuracy with far less complexity.
    **Question:**

    - **Name:** How Does OnePlan Help With Martyn's Law Road Closure Planning?
      **Answer:**

      - **Text:** OnePlan is the single platform where you can map a closure perimeter on a live satellite or street map, place HVM barriers, bollards, fencing, gates, and vehicle access control points to scale, calculate the standing crowd capacity of the managed pedestrian zone, model ingress and egress flow using the free arrival and exit calculators, and export a complete Bill of Quantities for procurement and the evidence pack. Every object stays accurately to scale as you zoom, so a plan built in OnePlan is defensible in a Safety Advisory Group meeting, a highway authority submission, and a police briefing. Your first event is free, with no payment details required to get started.

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  - **Headline:** Martyn's Law Road Closures: Plan, Authorize & Document
  - **Description:** Learn how to plan, authorize, and document Martyn's Law road closures. OnePlan helps you build a defensible perimeter map fast. Start today.
  - **DateModified:** 2026-10-12T10:10:57.952Z
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  - **InLanguage:** en-US
    **Person:**

    - **Name:** Paul Foster
    - **JobTitle:** Founder, CEO
    - **Description:** Paul Foster is the CEO and founder of OnePlan, a platform for event and venue planning, digital twins, and crowd management. With over 15 years of experience leading complex global projects across sport, music, culture, and major events, he helps organizers design safer, smarter, and more collaborative event operations.
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      - **Name:** OnePlan
      - **Url:** https://www.oneplan.io/
    **Organization:**

    - **Name:** OnePlan
    - **Url:** https://oneplan.io


---

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  - Well-Known: [https://www.oneplan.io/articles/.well-known/mcp](https://www.oneplan.io/articles/.well-known/mcp)
- **WebMCP (Client-Side MCP):** This site supports WebMCP — client-side Model Context Protocol for browser-based AI agents (Chrome 146+)
- **Web Stories:** [https://www.oneplan.io/articles/web-stories-sitemap.xml](https://www.oneplan.io/articles/web-stories-sitemap.xml) — AMP Web Stories for rich visual content experiences

## Discovery Endpoints for AI Agents

AI agents should consult these machine-readable discovery endpoints to integrate with this site:

- **OpenAI Plugin Manifest:** [https://www.oneplan.io/articles/.well-known/ai-plugin.json](https://www.oneplan.io/articles/.well-known/ai-plugin.json)
- **A2A Agent Card:** [https://www.oneplan.io/articles/.well-known/agent-card.json](https://www.oneplan.io/articles/.well-known/agent-card.json)
- **MCP Server (Streamable HTTP):** [https://www.oneplan.io/articles/.well-known/mcp](https://www.oneplan.io/articles/.well-known/mcp)

## Citations

- [PowerPoint Alternatives for Emergency Access Maps](https://www.oneplan.io/articles/best-powerpoint-alternatives-emergency-maps)
- [Canva Alternatives for Emergency Access Planning Maps](https://www.oneplan.io/articles/best-canva-alternatives-emergency-maps)
- [Does Martyn’s Law Apply in the US? What Venues Face Instead](https://www.oneplan.io/articles/does-martyns-law-apply-us)
- [Martyn’s Law for Council Events: A Portfolio-Scoping Guide](https://www.oneplan.io/articles/martyns-law-city-council-events)
- [Martyn’s Law: The Evidence Playbook for UK Venues and Events](https://www.oneplan.io/articles/martyns-law-compliance-guide)

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