Temporary Traffic Management on Irish Construction Sites: Legal Requirements and Planning
Vehicle and pedestrian conflicts are among the leading causes of fatal accidents on Irish construction sites.
# Temporary Traffic Management on Irish Construction Sites: Legal Requirements and Planning Vehicle and pedestrian conflicts are among the leading causes of fatal accidents on Irish construction sites. When construction work takes place near public roads, or when vehicles and pedestrians share the same site, the risk of a serious incident is significant. Temporary traffic management (TTM) is the system of measures used to control vehicle and pedestrian movements safely during construction work. This guide explains the legal requirements for temporary traffic management in Ireland, what a TTM plan must include, who is responsible for preparing it, and the key controls that reduce the risk of vehicle-pedestrian conflicts. ## Why Temporary Traffic Management Matters The statistics are stark. The Health and Safety Authority (HSA) consistently identifies being struck by a vehicle or plant as one of the top causes of fatal accidents in Irish construction. Many of these accidents involve workers being struck by reversing vehicles, or pedestrians being struck by vehicles entering or leaving a construction site. The risks are not limited to workers on site. Construction activity near public roads creates hazards for road users, cyclists, and pedestrians who are not connected with the project. A poorly managed site entrance, inadequate signage, or a vehicle reversing onto a public road without a banksman can result in a fatality involving a member of the public. Temporary traffic management addresses both of these risk categories: it protects workers on site from vehicle movements, and it protects road users from the hazards created by construction activity. ## Legal Framework The primary legal framework for temporary traffic management in Ireland comes from several sources: **The Safety, Health and Welfare at Work (Construction) Regulations 2013** require the PSCS to ensure that traffic routes on construction sites are designed, located, and maintained to ensure safe use by pedestrians and vehicles. Regulation 130 specifically requires that, where vehicles and pedestrians use the same traffic route, sufficient width must be provided for both, and adequate protection must be provided for pedestrians. **The Safety, Health and Welfare at Work Act 2005** imposes a general duty on employers to manage work activities to prevent risks to health and safety, which includes risks from vehicle movements. **Transport Infrastructure Ireland (TII) Publications** provide technical guidance on temporary traffic management on public roads. The key document is TII Publication DN-TTM-03001 (formerly NRA TD 49/07), which sets out the standards for TTM on national roads. Local authorities have their own requirements for regional and local roads. **The Road Traffic Acts** govern the use of public roads and require that any works affecting a public road are carried out with appropriate signage and traffic management measures. Where construction work affects a public road, a licence or permit from the relevant road authority (Transport Infrastructure Ireland for national roads, the local authority for regional and local roads) is typically required before work begins. ## The Temporary Traffic Management Plan For any construction project involving significant vehicle movements or work near a public road, a written Temporary Traffic Management Plan (TTM Plan) should be prepared before work begins. For notifiable projects, the TTM Plan is typically included in or appended to the Construction Phase Safety and Health Plan. A TTM Plan should address the following: **Site access and egress.** Where will vehicles enter and leave the site? Is the access point safe? Can vehicles enter and exit without reversing onto a public road? Is the access point visible to approaching traffic? **Separation of vehicles and pedestrians.** How will pedestrian routes be kept separate from vehicle routes? Where separation is not possible, what additional controls will be used (banksmen, speed limits, one-way systems)? **Reversing.** Reversing is one of the highest-risk activities on a construction site. The TTM Plan should minimise reversing where possible by using one-way systems. Where reversing is unavoidable, banksmen must be used. **Speed limits.** What is the maximum speed for vehicles on site? Speed limits of 5-10 km/h are typical on construction sites. How will the limit be enforced? **Signage.** What signs will be used to direct vehicles and pedestrians? Signs should comply with the relevant standards and be clearly visible. **Lighting.** If work takes place in low-light conditions, what lighting will be provided for traffic routes? **Maintenance.** How will traffic routes be maintained in a safe condition? Construction sites are dynamic environments — routes that are safe one day may become hazardous the next due to excavation, material storage, or ground conditions. **Public road interface.** If the site is adjacent to a public road, what measures will be taken to protect road users? This may include barriers, signage, traffic lights, or a banksman controlling traffic. ## Key Controls for Vehicle-Pedestrian Separation The hierarchy of controls for vehicle-pedestrian conflicts follows the same principles as any risk assessment: eliminate the risk where possible, then substitute, then engineer controls, then administrative controls, then personal protective equipment. **Elimination.** Can the need for vehicles in a particular area be eliminated? For example, can materials be delivered to the site boundary and moved by hand or trolley to the work area, rather than driving a vehicle through a pedestrian area? **Segregation.** Physical separation of vehicle and pedestrian routes is the most effective control. This can be achieved using barriers, fencing, or clearly marked lanes. Where a pedestrian route crosses a vehicle route, a designated crossing point with appropriate signage should be provided. **One-way systems.** A one-way traffic system eliminates the need for vehicles to reverse and significantly reduces the risk of vehicle-pedestrian conflicts. One-way systems should be designed before work begins and communicated to all site users. **Banksmen.** Where vehicles must reverse, a trained banksman must be used to guide the driver. The banksman must be in a position where they can see the vehicle and any pedestrians, and must use agreed signals. The driver must not move the vehicle until the banksman has given the all-clear. **Speed limits.** Low speed limits reduce the severity of any collision. Speed limits should be enforced through physical measures (speed bumps, narrow lanes) rather than relying solely on signage. **High-visibility clothing.** All workers on site should wear high-visibility clothing so that they are visible to vehicle operators. This is a minimum control, not a substitute for physical segregation. ## Work on or Near Public Roads Where construction work takes place on or near a public road, additional requirements apply. A TTM scheme must be designed and implemented to protect both workers and road users. For work on national roads, the scheme must comply with TII Publication DN-TTM-03001 and must be approved by TII before work begins. For work on regional and local roads, the requirements of the relevant local authority apply. A TTM scheme for roadworks typically includes: - Advance warning signs to alert road users to the works ahead - Speed limit signs reducing the speed limit in the works area - Lane closures or traffic management signals where necessary - Barriers or cones to separate the works area from live traffic - Lighting for night-time or low-visibility conditions - A traffic management supervisor to monitor the scheme and respond to incidents The TTM scheme must be designed by a competent person. For significant roadworks, this typically means a qualified traffic engineer or a person with specific TTM qualifications. TII and the Road Safety Authority (RSA) provide training courses for TTM supervisors and operatives. ## Responsibilities on Site The PSCS is responsible for ensuring that the TTM Plan is prepared and implemented on a construction site. However, all contractors and workers on site have a role to play. **The PSCS** must ensure that vehicle and pedestrian routes are designed, maintained, and managed safely, and that all contractors are aware of the TTM arrangements. **Contractors** must comply with the TTM arrangements and ensure that their workers and subcontractors do the same. **Vehicle operators** must comply with site speed limits, use banksmen when reversing, and not enter pedestrian areas with vehicles. **Workers** must use designated pedestrian routes and not take shortcuts through vehicle areas. **Banksmen** must be trained, positioned correctly, and use agreed signals. ## Common Failures The most common failures in temporary traffic management on Irish construction sites are: - No formal TTM Plan prepared before work begins - Vehicles reversing without banksmen - No physical separation between vehicle and pedestrian routes - Speed limits not enforced - Site access onto a public road without adequate visibility or signage - TTM arrangements not communicated to all workers and contractors Each of these failures has been a contributing factor in fatal accidents on Irish construction sites. A robust TTM Plan, properly implemented and monitored, addresses all of them. ## Conclusion Temporary traffic management is a critical element of construction site safety in Ireland. The legal obligations are clear: the PSCS must ensure that vehicle and pedestrian routes are designed and managed safely, and that work near public roads is carried out with appropriate TTM measures. A written TTM Plan, prepared before work begins and reviewed as the project develops, is the foundation of effective traffic management. Physical separation of vehicles and pedestrians, one-way systems, banksmen for reversing, and low speed limits are the key controls. If you need assistance preparing a TTM Plan or reviewing your site's traffic management arrangements, Safety Check can help. Contact us at [safetycheck.ie/contact](https://www.safetycheck.ie/contact). ## References [1] Safety, Health and Welfare at Work (Construction) Regulations 2013. Available at: https://www.irishstatutebook.ie/eli/2013/si/291/made/en/print [2] Transport Infrastructure Ireland - Temporary Traffic Management. Available at: https://www.tii.ie/technical-services/publications/ [3] Health and Safety Authority - Construction Safety. Available at: https://www.hsa.ie/eng/your_industry/construction/ [4] Road Safety Authority - Traffic Management. Available at: https://www.rsa.ie/