Principal Contractor Advisory Support

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Practical CDM support for Principal Contractors — advice, documentation, and structured systems to help you run organised, compliant projects.

If you’re managing the Principal Contractor role alongside running the job, we provide the expert guidance and support that keeps your Construction Phase Plan, RAMS, and site records properly organised and ready when clients or auditors ask to see them.

Experienced construction safety advisors supporting SME Principal Contractors across the UK.

37 Critical document templates for Principal Contractors: User Manual Index

Purpose and outcome

The Site Traffic Management Plan (STMP) & Briefing Record is your “one agreed way of working” for vehicles, plant and pedestrians moving around site.

A good STMP is simple, site-specific, and enforced. It should make it obvious:

Where vehicles enter, go, load/unload, and exit.
Where pedestrians walk, cross, and must not go.
How you control reversing, banksmen, and busy delivery periods.
How you brief everyone and keep a record when things change.

Outcome you want: no mixing of people and moving plant, fewer near misses, and supervisors able to point to one current plan.

Who uses it (roles and responsibilities)

Role	What they do with the STMP
Site Manager / Supervisor	Leads the plan, checks it is workable, briefs the team, enforces it daily, and updates it when the job changes.
Traffic Coordinator (if used)	Controls deliveries/booking-in, keeps routes clear, manages gate control, and helps run banksman arrangements.
Banksman / Vehicle Marshal	Follows the reversing rules, uses agreed signals/radio, sets exclusion zones, stops the job if unsafe.
Plant operators & drivers	Follow route, speed, reporting point, unloading rules, and the stop rule if visibility/control is lost.
All workers (including subcontractors)	Use pedestrian routes only, report issues, and sign the briefing record (new starters and when changes happen).
Principal Contractor / Client (where applicable)	May review/approve the plan and expect evidence that briefings are happening and changes are controlled.

When to use it (workflow and timing)

Mobilisation / first day on site: create the first version before heavy deliveries and plant start.
Before high-risk activities: muck-away, concrete pours, crane/HIAB lifts, steelwork deliveries, demolition, restricted access works.
When phases change: new work area opens, compound moves, new gate/access, routes change, new walkways/crossings needed.
When new people arrive: new subcontractor, agency labour, regular delivery drivers, or a new plant operator.
After an incident/near miss/complaint: review the plan the same day where possible and re-brief.
Seasonal changes: darker mornings, ice, mud on roads, reduced visibility.

Before you start (what you need to gather)

A simple site layout base: printed site plan, marked-up sketch, or aerial view you can draw on.
Access information: gate locations, turning circles, any width/height restrictions, public road interface, neighbour access issues.
Delivery profile: expected types (HGV, grab lorry, concrete wagon), peak times, booking-in contact, waiting area.
Plant list: telehandler, excavator, dumper, forklift, MEWP, etc. Include where they will operate and travel.
Pedestrian routes needed: welfare route, workface route, visitor route, emergency assembly route.
Existing controls: fencing/hoarding type, barriers, signage available, lighting, radios.
Known pinch points: blind corners, tight turns, slopes, soft ground, overhead lines, shared access, schools/peak pedestrians.

How to complete it (step-by-step)

Step 1: Fill in the plan details (ownership and version control)

Complete the site details, supervisor name, and who owns traffic control day to day.
Set a plan version, issue date, and a sensible next review date (don’t leave it blank).
Write a short “changes since last version” note so everyone can see what’s new.

Step 2: Agree the “Quick Rules” (what you’ll enforce)

Set a realistic speed limit for your site (and stick to it).
Confirm walkways only for pedestrians—no shortcuts.
Decide your reversing approach: avoid it where possible; where not possible, define how it will be controlled.
Set clear delivery reporting instructions (where drivers go first and who they speak to).
Make the stop-work triggers clear: if separation breaks down, routes blocked, signage missing—stop and reset.

Tip: put these rules on the briefing board and repeat them at the gate when drivers arrive.

Step 3: Mark up the site layout (keep it simple and readable)

Draw/mark: access, exit, one-way route (if used), loading/unloading areas, turning points.
Draw/mark: segregated walkways, crossing points, and “no-go” zones.
Include: welfare, muster point route, and any public interface boundary.
Use arrows for direction and keep the sketch to one page where possible.

Tip: if you can’t clearly explain the route using your sketch in 60 seconds, it’s too complicated.

Step 4: Set vehicle/plant rules that match the site reality

Access/gates: confirm where vehicles can queue without blocking roads or mixing with pedestrians.
One-way system: only use it if you can sign it and keep it clear. If it’s not practical, don’t pretend it exists.
Road hazards: tick the hazards you actually have and write what you’ll do about them (e.g., banksman at blind corner).
Wheel wash/road cleaning: if mud is likely, agree who does it and when (especially if you’re near public roads).

Step 5: Lock down reversing controls and banksman rules

List where reversing is allowed (specific zones), and aim to reduce those zones over time.
Decide when a banksman is mandatory (e.g., always when reversing, or always for HGVs/HIABs).
Agree signals/radio method and make sure drivers and banksmen use the same system.
Apply the stop rule: if driver and banksman lose sight—stop immediately.
State how you will keep pedestrians out: barriers, cones/tape (short term), spotter, or hard exclusion zone.

Practical check: stand where the banksman would stand and ask: “If it goes wrong, where do I escape to?” If you can’t answer, redesign it.

Step 6: Control loading/unloading and delivery booking

Set a booking-in method (phone number/person, time slots, no “turn up any time”).
Define the driver process: report point, waiting area, PPE expectations, escort rules.
Confirm the unloading area is suitable (ground conditions, level, overhead hazards).
Where lifting is involved (HIAB/crane/telehandler), make sure the lifting arrangements tie in with the traffic plan (exclusion zones, pedestrian diversion).

Step 7: Plan pedestrian management properly (not just “be careful”)

Describe the segregated walkway route and how it is protected (barrier/hoarding where possible).
Set crossing points: fewer is better, but make them practical so people will use them.
Make welfare access safe and maintained (people will go to welfare several times a day).
Visitors: decide if they must be escorted and who escorts them.

Step 8: Check signs, barriers, housekeeping, and lighting

List what signage must be up (entrance reporting, speed, walkway, reversing warnings, one-way arrows).
Confirm barriers/hoarding are continuous (no “temporary gap” that becomes permanent).
Set who checks routes are clear daily (materials, parked plant, waste).
Where lighting is needed (early starts/winter), state what is provided and where.

Step 9: Brief it and record it (this is what makes it work)

Brief the plan at induction/toolbox talk and at the gate for drivers where needed.
Walk people through the route on the sketch: “You enter here, you walk here, you cross here.”
Use the Briefing Record to capture who was briefed, by who, and when.
When the plan changes, re-brief and record it again (don’t rely on word of mouth).

Review and approval (who signs off, what to check)

On small sites, formal “approval” may simply be the Site Manager/Supervisor agreeing it with the team and enforcing it. If you are under a Principal Contractor, they may want to review it before site works ramp up.

Minimum checks before you issue the plan

Routes are practical (vehicles can actually turn, pedestrians can actually get where they need to go).
Reversing is minimised and controlled (banksman, signals, exclusion zones).
Deliveries can be managed without chaos (booking-in, reporting point, waiting area).
Walkways/crossings are clear and protected (not just lines on paper).
Signs/barriers listed are available and will be installed.
Emergency access remains clear.

Escalate if any of these are true

You cannot maintain separation between pedestrians and moving plant.
Public interface risks cannot be controlled (shared road/footpath, schools, neighbours).
Lifting operations overlap with pedestrian routes and cannot be segregated.
Site constraints mean reversing is constant and uncontrolled.

Recordkeeping (storage, version control, retention)

Keep one “current live” version on site (notice board / site folder) so supervisors can enforce it.
File old versions with the change log so you can show what changed and when (useful after incidents).
Store with other site H&S records (RAMS, inductions, toolbox talks, inspections). Keep it easy to find.
Keep briefing sign-off sheets together with the plan version they relate to (avoid mixed records).

Retention: keep for the job duration plus your normal project record period. If you follow a company standard, use that.

How often to review or update

At mobilisation and before major deliveries/plant movements start.
Whenever a review trigger happens (phase change, new access, new contractor, new plant, near miss).
Regular planned check: set a review date (weekly on busy jobs; at least monthly on steady jobs).
Daily visual check: supervisor confirms routes, barriers and signage are in place before peak times.

Common mistakes / pitfalls (and how to avoid them)

Common pitfall	What to do instead
Plan is “paper only” and doesn’t match what’s happening on site.	Walk the routes, then update the sketch and rules so they match reality.
Too many routes/crossings, so people take shortcuts.	Keep it simple: one main walkway, a couple of controlled crossings, clear “no-go” zones.
Reversing happens everywhere “as needed”.	Define reversing zones only. Make banksman rules clear and enforce the stop rule.
No one controls deliveries, so wagons arrive together and block routes.	Use booking-in slots, a reporting point, and a waiting area off the main route.
Briefings aren’t recorded, so you can’t prove people were told.	Use the Briefing Record every time you brief, and especially when the plan changes.
Barriers/signs start ok, then slowly disappear as the job gets busy.	Make barrier/sign checks part of the daily routine and fix gaps immediately.
Drivers are left to guess where to go.	Give drivers simple arrival instructions: report point, route, speed, and “don’t move until told”.

Worked scenario (what “good” looks like)

Job: small refurbishment with a tight rear yard. Telehandler in use. Regular plasterboard and skip deliveries.

Supervisor completes the STMP at mobilisation: sets 10 mph, defines one access gate and a marked exit route, and draws a simple sketch showing the rear yard loading bay.
Pedestrian route is set from gate to welfare and work area using barriers. One crossing point is marked where the route meets the yard.
Reversing is limited to the loading bay only. A named banksman is assigned for all HGV reversing. The exclusion zone is cones/barriered during unloading.
Deliveries are booked: plasterboard at 09:30, skip at 13:00, no arrivals in the first 30 minutes of the day. Drivers are told to report to the supervisor and wait at the gate until guided in.
The team is briefed using the sketch. Everyone signs the Briefing Record. A week later the compound moves: the sketch is updated, version changed, and the team is re-briefed and recorded again.

Principal Contractor Support

Running a CDM Project as Principal Contractor?

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When you take on the Principal Contractor role, the responsibility for the Construction Phase Plan, site safety records, RAMS, and CDM compliance usually lands on the desk of a busy director or site manager.

CTC South West provides practical advisory support and structured systems that help you keep your documentation organised, your responsibilities clear, and your projects ready for client checks or audits.

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Construction Phase Plans structured and ready for client review
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Practical advice from experienced construction safety advisors — supporting SME Principal Contractors across the UK.