UK: Avoid Annual Repaints With DfT Aligned EV Charging Bay Markings
Mark every EV charging bay with the S65 car-with-plug symbol, the “EV CHARGING” legend where space allows, and a matching upright sign, ideally to Department for Transport diagram 660.9. Use thermoplastic rather than paint for the actual line markings, since it lasts far longer under regular tyre contact. Check the DfT’s traffic signs guidance and the Public charge point regulations 2023 guidance before you finalise the design.
TL;DR:
Use thermoplastic instead of paint for long-lasting EV bay markings, as painted lines tend to fade or lift within a year.
Pair pavement symbols and legends with upright signage, ideally diagram 660.9, to ensure enforceability and clear recognition.
Keep EV bays visually distinct with color choices such as green, avoiding blue which is reserved for mobility parking, and maintain consistency across sites.
Design accessible EV bays in accordance with PAS 1899, including proper clear zones and proximity to pedestals, to avoid costly retrofit work.
Follow a detailed installation process involving site survey, surface preparation, precise thermoplastic application, and regular inspection for durability.
Table of Contents
Which symbols and legends should EV charging bay markings use?
The recognised symbol is diagram S65, the car-with-plug icon referenced throughout DfT signage guidance. It should sit centrally in the bay, large enough to read from a driver’s seat at low speed, but not so large it interferes with the charger’s cable reach or pedestrian access. Consistency matters more than any single design choice: a driver arriving at your site for the first time should recognise a bay as reserved for EV charging within a second or two of looking at it.
Legend text varies depending on space and site type. Common wording includes:
“EV CHARGING” — the shortest, most universally understood option for tight bays.
“ELECTRIC VEHICLES ONLY” — clearer intent for sites with mixed parking, though it needs more surface area.
“EV CHARGING ONLY” — a middle ground that works well on standard 2.4 metre bays.
Colour is where most facility managers overthink things. Green infill is widely used across UK retail and workplace car parks because it gives drivers a quick visual cue, but it is not a national legal requirement. What does matter is avoiding blue, which is reserved for accessible or mobility parking under separate regulations. If your site already uses a colour scheme for other bay types, keep EV bays visually distinct from those, but pick one approach and apply it uniformly across every bay on the site.
What signage and regulations apply to EV bays?
Pavement markings alone are rarely enough to enforce a reserved EV bay. DfT guidance recommends pairing bay markings with upright signage, typically to diagram 660.9, alongside matching diagrams 1028.3, 1028.4, 1032 or 1033 depending on the parking restriction type. This combination gives you both visual recognition at ground level and a legally referenceable sign that a parking attendant or enforcement contractor can point to.
Practical points worth building into your specification:
Upright signs should be positioned where they’re visible on approach, not obscured by trees, other vehicles or bins.
Time or permit panels can be added beneath the main sign if you want to restrict charging to certain hours or badge holders.
On private or semi-public land, enforcement depends on your own terms being clearly signed. DfT guidance is explicit that markings without matching signage weaken your ability to challenge misuse.
If you operate or host a public charge point, check the Public charge point regulations 2023 guidance for obligations around pricing transparency and reliability reporting that may affect your signage too.
Councils generally won’t enforce a bay that only has paint on the tarmac. Get the sign up first.
Which materials last longest on commercial EV bays?
Thermoplastic is the standard choice for commercial car parks, and for good reason. It’s heated and melted directly onto the road surface rather than sprayed on top, which gives it far greater thickness and resistance to abrasion than conventional paint. On a site with regular vehicle turnover, that difference shows up within a single winter: painted markings often fade or lift within a year, while properly applied thermoplastic can hold its shape and colour for several years.
Most failures aren’t a material problem, they’re a preparation problem. Skipping surface cleaning, applying over damp tarmac, or ignoring a needed primer on porous concrete leads to flaking and peel-back within months, regardless of how good the thermoplastic itself is.
Coloured surfacing (rather than simple infill) can work well for larger destination sites wanting a strong visual identity, but avoid blue, which UK convention reserves for mobility bays. Reflective glass beads mixed into the thermoplastic improve night-time visibility, and an anti-slip additive is worth specifying anywhere the bay sits on a slope or gets wet regularly.
Pro Tip: Ask your installer for the thermoplastic’s expected surface temperature at application. If they can’t tell you, they’re not measuring it properly, and that’s usually the first sign of a rushed job.
How wide and accessible should EV bays be?
Bay dimensions need to accommodate not just the vehicle but the charging routine itself: cable handling, pedestal clearance and, for some drivers, a wheelchair or mobility aid. A standard bay width around typical parking dimensions works for most vehicles, but accessible bays need considerably more.
For accessible EV bays, follow the good practice set out in PAS 1899, the UK standard covering accessible EV charging. Key points to build into your layout:
Add a hatched access zone alongside accessible bays, similar to standard disabled bay design, to allow room for a side-loading ramp or wheelchair transfer.
Position the charger pedestal within comfortable reach from a seated position, typically no more than a metre from the bay edge.
Include at least one accessible EV bay on any multi-bay installation, even where overall demand for accessible parking is low.
Getting this right at the design stage is far cheaper than retrofitting a bay after installation.
What’s the process for installing durable EV bay markings?
A rushed marking job rarely survives its first winter. Following a structured sequence keeps thermoplastic bonded properly and avoids repeat visits.
Survey the site. Record surface type, drainage, existing paint layers and typical vehicle movement patterns before specifying anything.
Prepare the surface. Pressure wash to remove oil and debris, allow full drying time, and apply a primer on porous or older concrete.
Apply the thermoplastic. Heat to the manufacturer’s specified temperature and lay symbols and legends to a consistent template across every bay.
Inspect on a cadence. Check markings every six to twelve months, watching for edge lifting, colour fade or cracking around the symbol.
Skipping surface preparation is the single most common cause of premature failure reported by UK line-marking contractors, even when the thermoplastic itself is high quality. A five-minute check on drying time saves a full remark a year later.
How much does EV bay marking cost and how long does it take?
Costs vary with bay count, surface condition and whether traffic management is needed during works. A single bay marking job, including symbol, legend and colour infill, typically sits at the lower end of line-marking pricing; multi-bay projects benefit from economies of scale on labour and material setup.
Lead times depend on scheduling more than the work itself. Expect roughly this sequence when planning:
Site survey and quote: usually one to two weeks from enquiry.
Material and crew scheduling: a further one to three weeks depending on contractor availability.
Installation: often completed within a single day for sites under ten bays, weather permitting.
When tendering, ask for a written thermoplastic warranty, evidence of previous commercial installations, and confirmation that the contractor holds appropriate site access and public liability insurance before work begins.
How Swiftcharging delivers compliant, lasting bay markings
Bay markings aren’t an afterthought on any installation Swiftcharging designs. They’re planned alongside charger siting, cable routing and pedestal placement from the first site survey, so the symbol, signage and hardware line up rather than being fitted around each other later. Where a project qualifies, we also help businesses identify and apply for available government EV charging grants to offset installation costs, and we offer ongoing maintenance to keep markings and hardware performing together. If you’re planning bay markings as part of a wider installation, request a site survey and we’ll walk the site with you before anything gets specified.
— Swift Charging
Where to check the rules and specifications
For anything beyond general guidance, go straight to the primary documents. The DfT’s traffic signs annexe sets out the diagrams referenced throughout this guide, while the Public charge point regulations 2023 guidance covers operator obligations if you’re hosting public charging. For technical detail on charger siting and integration, Swiftcharging’s EV infrastructure resources are worth bookmarking before you brief a contractor.
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