Traffic Signs Manual (TSM) Chapter 5 is the UK guidance document that covers the use of road markings. It helps designers, clients and contractors apply road markings consistently so drivers can interpret them correctly. If you're specifying thermoplastic markings, TSM Chapter 5 is often the starting point for understanding what markings are used where, how layouts should work, and why visibility is a key part of safe road marking design.
TSM Chapter 5 is guidance about road markings and their correct use. It's not a material data sheet, but it informs what markings are required, where they're appropriate, and how they should be presented.
How TSM Chapter 5 fits with thermoplastic road markings
What markings mean, where they're used, layout intent
How markings are procured and delivered
How performance and material properties are described
Supporting documents:
Why visibility is central to the guidance
Road markings only work if they can be seen and understood. Visibility has a direct impact on driver guidance, especially at night and in poor weather. Thermoplastic markings are often chosen because they can be durable and can maintain strong night-time visibility when installed with an appropriate bead approach.
What clients and contractors typically use TSM Chapter 5 for
- Confirm what a marking should look like and where it should be used
- Ensure consistency across a network
- Support design decisions and layout drawings
- Align stakeholders before procurement and installation
- Reduce rework caused by unclear or incorrect marking intent
From guidance to a quote-ready scope
For procurement and delivery, the biggest issues aren't usually "what is the marking called?"—they're:
- Unclear scope and quantities
- Access and traffic management assumptions
- Surface condition and preparation requirements
- Removal/refresh assumptions where old markings exist
- Acceptance and handover expectations
How to use TSM Chapter 5 without overcomplicating your brief
Reference it as the guidance basis for marking selection and layout intent, then keep the rest of your brief practical:
- Define locations and marking types using a plan/schedule
- Define constraints (working windows, phasing, permits)
- Define visibility intent where it matters most
- Define acceptance and handover evidence
- Let the installer propose method and preparation approach