Product Overview

Summary: This Route Diversion and Detour Management SOP sets out a clear, compliant process for planning, implementing and monitoring traffic diversions around worksites, incidents and temporary closures. It helps Australian businesses protect workers and road users, minimise congestion, and meet strict WHS and road authority requirements whenever normal routes are disrupted.

Any time a road, accessway or internal site route is closed or restricted, businesses have a legal and moral obligation to manage the diversion of traffic safely. Poorly planned detours can lead to serious vehicle collisions, near misses with pedestrians and cyclists, damage to property, and significant delays that erode public confidence. This Route Diversion and Detour Management Safe Operating Procedure provides a structured, step-by-step approach for designing, approving and implementing safe detours that comply with Australian WHS laws and local road authority requirements.

The SOP guides you through the full lifecycle of diversion management: from initial impact assessment and stakeholder consultation, through route selection and risk assessment, to signage placement, traffic control, monitoring and demobilisation once normal routes are restored. It addresses the practical realities of Australian conditions, including heavy vehicle movements, school zones, shared paths, regional roads and major arterial networks. By standardising how diversions and detours are planned and communicated, this procedure helps organisations reduce confusion for road users, protect onsite workers and contractors, and demonstrate due diligence if an incident is later reviewed by a regulator or insurer.

Key Benefits

• Ensure diversions and detours are designed and implemented in line with Australian WHS and road authority requirements.
• Reduce the risk of vehicle collisions, worker strikes and pedestrian incidents around temporary traffic management zones.
• Streamline planning, approval and communication processes for route changes across projects and worksites.
• Improve traffic flow and minimise disruption for the public, heavy vehicles and critical service providers.
• Demonstrate clear due diligence and defensible decision-making in the event of audits, complaints or incident investigations.

Who is this for?

• Traffic Management Planners
• Project Managers
• Site Supervisors
• WHS Managers
• Civil Construction Managers
• Roadworks Supervisors
• Event Operations Managers
• Logistics and Transport Coordinators
• Local Government Infrastructure Officers
• Emergency Management Coordinators

Hazards Addressed

• Vehicle-to-vehicle collisions at diversion merge points and temporary intersections
• Struck-by incidents involving workers, pedestrians and cyclists in or near detour routes
• Confusion and sudden manoeuvres due to inadequate or misleading detour signage
• Inadequate separation between live traffic and work areas during route changes
• Increased risk at rail level crossings, school zones and pedestrian crossings along detour routes
• Heavy vehicle rollovers or loss of control on unsuitable detour roads (e.g. steep grades, unsealed surfaces)
• Reduced visibility and reaction time in poor weather, low light or night works on diversion routes
• Congestion-related risks including road rage, unsafe overtaking and queueing across intersections
• Emergency vehicle access delays caused by poorly planned or uncoordinated detours
• Fatigue-related incidents for drivers on extended or complex diversion routes

Included Sections

• 1.0 Purpose and Scope
• 2.0 Definitions and Key Terms
• 3.0 Roles, Responsibilities and Competency Requirements
• 4.0 Planning Triggers and When a Detour is Required
• 5.0 Route Assessment and Selection Criteria
• 6.0 Risk Assessment and Hierarchy of Control for Diversions
• 7.0 Consultation with Road Authorities, Emergency Services and Stakeholders
• 8.0 Development and Approval of Traffic Management Plans
• 9.0 Signage, Devices and Road Marking Requirements
• 10.0 Implementation of Route Diversions and Detours
• 11.0 Managing Pedestrian, Cyclist and Public Transport Impacts
• 12.0 Heavy Vehicle, Oversize and Restricted Access Route Considerations
• 13.0 Communication and Public Notification Requirements
• 14.0 Monitoring, Inspection and Adjustment of Detours
• 15.0 Incident, Near Miss and Complaint Management on Detour Routes
• 16.0 Emergency Access and Contingency Arrangements
• 17.0 Demobilisation and Restoration of Normal Routes
• 18.0 Training, Induction and Competency Verification
• 19.0 Recordkeeping, Documentation and Audit Trail
• 20.0 Review, Continuous Improvement and Change Management

Legislation & References

• Model Work Health and Safety Act 2011 (Cth) and corresponding state and territory WHS Acts
• Model Work Health and Safety Regulations 2011 and corresponding state and territory WHS Regulations
• AS 1742.3: Manual of uniform traffic control devices – Traffic control for works on roads
• AS 1742.1: Manual of uniform traffic control devices – General introduction and index of signs
• Austroads Guide to Temporary Traffic Management (all relevant parts)
• Safe Work Australia – General Risk and Workplace Management requirements
• Safe Work Australia – Code of Practice: Work Health and Safety Consultation, Cooperation and Coordination
• State and territory road authority manuals for temporary traffic management (e.g. TMR QLD, TfNSW, DoT VIC)
• AS/NZS ISO 31000: Risk management – Guidelines