Site Traffic: Keep People Out of the Delivery Route

NIOSH distinguishes a roadwork plan for public traffic from an internal traffic control plan for construction vehicles, equipment and people within the work zone. Its 2024 guidance treats internal movements as a separate planning problem. [1]

OlbrichCo recommends applying that distinction to a bounded construction phase in Iran. Approve how the next delivery reaches its destination, how people reach their work and welfare facilities, and who controls their interfaces. A gate sign or a public-road arrangement should not stand in for an internal movement plan. Adapt the principle; do not import the US roadwork framework as a local obligation.

Start with one consequential operation: concrete deliveries beside an active entrance, spoil removal during excavation, or materials arriving while finishing trades occupy the ground floor. Walk the area with the site manager, safety lead, logistics coordinator, relevant subcontractors and a driver representative. Mark actual destinations, doors, queues, unloading areas and changes expected before the operation ends.

Give the resulting plan a boundary, phase, revision and accountable owner. List the vehicle types and activities it covers, the people authorised to admit a delivery, and the conditions that suspend its use. Keep public-road interfaces as a coordinated but separate scope, with the necessary local authority review. No internal sketch grants permission to occupy a pavement or redirect public traffic.

HSE recommends separate pedestrian routes and alignment with the paths people would naturally choose. Its guidance recognises that a separation arrangement must account for actual pedestrian movement, not only a line drawn on a plan. [5]

For the proposed phase review, trace journeys from the entrance to changing areas, toilets, drinking water, offices and each active workfront. Include visitors and workers carrying tools. Ask a worker to explain the route without assistance. If the answer involves stepping into a delivery lane to bypass stored material, reopen the arrangement before treating the induction as complete.

On a constrained Iranian site, compare a revised storage layout, a different unloading point and a changed delivery sequence before accepting routine interaction. Include the cost of temporary access, additional handling and supervision in that comparison. A smaller vehicle may require more trips; assess the complete operation rather than assuming a smaller truck automatically creates a safer or cheaper system.

Where a crossing remains necessary, have the competent planner define its location, visibility, control and priority rules. Identify the person who maintains those conditions and the alternative when the crossing is unavailable. Protect emergency escape and accessible access. Do not let a delivery booking displace these requirements or create a pedestrian diversion into an unassessed area.

WorkSafe New Zealand distinguishes barriers intended to resist vehicle impact from barriers intended to guide pedestrians. Its traffic guidance makes protection depend on the hazard; the presence of a barrier alone does not establish impact resistance. [3]

Ask the responsible designers and site team to review the actual vehicle envelope, load, turning path, ground support, slopes, overhead restrictions and proximity to excavations or structures. Resolve temporary covers and buried-service crossings before using them. Record the evidence and any restrictions on vehicle configuration; a route accepted for one delivery should not silently admit a heavier or longer replacement.

Specify the intended function of every separation element. If vehicle restraint is required, obtain a suitably designed or assessed system, including its support, working space and installation requirements. If an element only delineates a route, label that limitation in the plan. The cover’s blue divider is an editorial metaphor and supplies no impact rating, dimension or construction detail.

Before opening the route, compare the installed arrangement with the approved revision and photograph identifiable locations. Assign ownership of repairs, cleaning, lighting and reinstatement after access changes. For dust, rain, darkness or damaged surfaces, define project-specific inspection and suspension criteria. Have local specialists set speeds and clearances from the actual conditions; this note offers no universal numerical limits.

WorkSafe’s reversing guide calls for agreed driver–spotter signals, a spotter outside the vehicle’s path, and an immediate stop when visual contact is lost. Guidance is not a substitute for task-specific competence and planning. [4]

First require the planner to document whether the manoeuvre can be removed or relocated. Where reversing remains, approve a task-specific arrangement naming the vehicle, destination, exclusion area, personnel and communication method. Put this arrangement into the subcontractor and haulier briefing rather than leaving the driver to negotiate it with whoever happens to be nearest the gate.

Have the competent team establish the sequence for clearing and controlling the area, admitting the vehicle and releasing the area afterwards. Agree what happens when another delivery arrives, the designated signaller is absent or a pedestrian needs access. Do not run a demonstration by placing anyone in a live vehicle path; rehearse decisions with a stationary, safely secured vehicle or a tabletop exercise.

If cameras, proximity warnings or radios are proposed, procure a demonstrated function under representative site conditions. Ask the supplier to show coverage, limitations, failure indication, cleaning needs and support arrangements for the actual vehicle. Record what the operator must do when the aid is unavailable. Do not give a device an unreviewed role in replacing the approved separation or supervision.

HSE’s construction guidance links traffic management to reducing unnecessary vehicle movements, managing visiting drivers and ensuring that drivers and pedestrians understand the site routes and rules. Delivery organisation is part of the control system. [2]

Issue a concise Persian delivery instruction, with another language or interpreted briefing where needed: correct entrance, booking contact, permitted vehicle configuration, arrival window, approved waiting location and unloading contact. Include a legible current plan available offline. Ask the haulier to confirm understanding and tell the site about substitutions before dispatch; possession of a document is not proof of understanding.

Use a readiness check before admitting the load: current route available, receiving crew present, unloading space released, required control personnel in position and no unresolved conflict with another operation. Define who can defer entry and who tells the supplier to hold dispatch. Arrange a lawful, safe waiting solution in advance; never improvise a queue that obstructs public access.

Make arrival, unloading and departure separate decisions on the receiving record. Identify where the visiting driver should remain and how any necessary exit from the cab is managed under the approved method. Coordinate load securing, lifting and equipment isolation through their own competent plans. A traffic release does not authorise a lift, an unstable unloading operation or entry into an equipment danger zone.

Before each shift using the route, verify that its physical conditions and planned activities still match the issued plan. Require review after a hoarding move, new excavation, relocated storage, changed vehicle, altered workfront or access complaint. Give workers a direct way to report a blocked path and stop the affected movement. Do not wait for the next scheduled document review.

For a pilot, keep a short exception register alongside the current plan: time, location, movement involved, condition found, immediate action, owner and evidence of closure. Review it with the trades and hauliers, not only the safety office. Preserve superseded revisions so an incident or near miss can be examined against the arrangement actually in force.

Measure observed deliveries requiring reversing, unplanned vehicle–pedestrian interactions, blocked walking routes, incomplete driver briefings and time to close defects. State the observation period and denominator, such as observed deliveries or inspected route segments. Do not reward a low near-miss count without checking reporting quality. These are proposed management measures, not a claimed accident reduction or financial return.

Expand the approach only when the pilot shows that people can follow and maintain the arrangement during real shift changes and disruptions. Retain an owner-held plan and offline instructions. Applicable Iranian requirements, contracts, competent local safety and engineering review, manufacturer instructions and actual site conditions govern implementation. The useful outcome is a controlled movement with a clear stop decision, not a tidy drawing.