Construction Traffic Management Plan: routing and swept paths

A Construction Traffic Management Plan is approved by the highway authority, not by the planning officer, and it is normally tied to a condition that has to be discharged before any work starts on site. That is why the construction traffic management plan planning condition sits on the critical path for so many schemes. The contractor is ready, the plan is with the county, and nothing happens for six weeks.

The document itself is short. What takes time is agreeing the route and proving that the vehicles you intend to use can physically get in and out.

What the highway authority is actually approving

Three things, in order of how hard they are to argue.

First, that construction traffic will use a route the authority is willing to accept, avoiding roads it considers unsuitable. Second, that vehicles can enter and leave the site without reversing onto the public highway or overrunning a footway. Third, that the works will not leave mud, dust or damage on the network that the authority ends up paying to clean or repair.

Everything else in the plan supports one of those three points. An officer reading it is looking for drawings that answer them, so a plan of twelve pages of prose and one badly scaled location plan will come back with comments.

Routing plans and the agreed lorry corridor

The routing plan is a drawing, not a paragraph. Show the route from the strategic road network to the site access, marked in one colour, with the point at which vehicles join the local road network identified.

Then say what you are excluding and why. Authorities care about narrow residential streets, roads past school gates, weak bridges, weight and width restrictions, and any road with a residents' parking scheme where a 16.5 m articulated vehicle cannot pass parked cars. Naming those roads and stating that they will not be used is more persuasive than a general commitment to sensitive driving.

Practical content worth including:

• The route in both directions, because the exit route is often different from the entry route.
• Signage: what will be put up, where, and under whose licence.
• A statement of how the route will be communicated to hauliers and enforced through the contract.
• Abnormal loads: which movements, what notification, and to whom.
• A named contact and a complaints procedure, with response times.

Swept paths and access geometry

Swept path drawings are the part officers check most carefully. Produce them with vehicle tracking software, using the design vehicles the site will actually see rather than the smallest that fits.

Typical vehicles to track are a 16.5 m articulated lorry, an 11.6 m rigid tipper, a concrete mixer and, for residential schemes, an 11.2 m refuse vehicle for the completed development. Track entry, exit and any internal manoeuvre, including turning within the site so vehicles can leave in forward gear.

Show the vehicle envelope against the kerb line with the tolerance the authority expects, usually a clearance to the kerb rather than wheels running along it. If the geometry only works with the vehicle crossing the centre line of a two-way road, say so and propose a control such as a banksman and a hold point rather than hoping nobody measures it.

Where the access is temporary and differs from the permanent one, draw both. And if visibility from the construction access falls short of the standard for the measured speed of traffic, that has to be addressed with the same rigour as the permanent access in a Transport Assessment, not left to the contractor.

Delivery hours, marshalling and holding areas

Delivery hours are usually conditioned separately, and the plan should match those hours rather than propose different ones. Peak hour restrictions around school opening and closing times are common in residential areas.

Marshalling is the practical answer to a site that cannot hold arriving vehicles. Options are a booking system with timed slots, a holding area on site, or an off-site lay-by agreed with the authority. What does not work is an unstated assumption that lorries will wait on the street, because that is exactly the outcome the authority is trying to prevent.

Banksmen do more of the work than any drawing. Say how many, when they are present, and what powers they have to hold a vehicle. On a constrained urban site the plan should be explicit that no vehicle enters or leaves without a banksman in position.

Wheel washing, dust and highway condition surveys

Mud on the road is the complaint that reaches councillors, so authorities take it seriously out of proportion to its engineering significance. Specify the wheel wash type, its position relative to the exit, the length of hardstanding between wash and highway, and the arrangements for road sweeping including a frequency and a trigger.

A highway condition survey before work starts protects both sides. Photograph and record the carriageway, footways, kerbs, verges, street furniture and drainage covers along the agreed route near the site access, share it with the authority, and repeat the exercise at completion. Without it, every existing crack becomes yours.

Dust suppression, hoarding, footway closures and any temporary traffic management sit alongside. Works affecting the highway itself need the right consent: a section 278 agreement under the Highways Act 1980 for permanent works, a licence under the street works regime for temporary occupation, and a skip or hoarding licence where either sits on the public highway.

Where the traffic plan stops and the management plan starts

The two documents overlap and councils use the names loosely. Keep the split clean in your submission.

The Construction Traffic Management Plan deals with vehicles, routes, access, highway condition and anything the highway authority controls. The Construction Management Plan covers the site: working hours, noise and vibration, dust, waste and recycling, piling method, site compound, operative parking, lighting and neighbour liaison.

Cross-reference rather than duplicate. Where the same commitment appears in both with different wording, an officer will discharge one condition and query the other.

Discharging the condition without losing weeks

Start the plan when the contractor is appointed, not when the condition is spotted. Three moves shorten the process.

1. Ask the highway authority, before you draft, which design vehicles and which route it expects. A pre-submission email answers in days what a formal application answers in weeks.
2. Submit the swept path drawings as separate numbered drawings rather than embedded images, so the officer can print them at scale.
3. Apply to discharge the condition with the plan attached, and state in the covering note which condition number you are addressing and which drawings satisfy it.

Applications to discharge conditions have their own fee and their own determination period, typically eight weeks, so a plan submitted the week before a planned start is a plan that delays the start. Check the wider set of report types at the same time, because construction stage conditions rarely arrive alone.

This is general guidance, not legal advice; check the position with your local planning authority or a qualified professional before relying on it. PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval.