D2.12DETAILED TRAFFIC MANAGEMENT DESIGN
D2.12.1 For large scale works, the scheme traffic management design is led by the traffic management designer, who will produce the detailed traffic management layouts including scale plans of the traffic management scheme and possible alternatives which have been evaluated and assessed.
D2.12.2 The objective of the detailed traffic management layout is to demonstrate a practical solution to facilitate safe passage of traffic, including pedestrians, past the works and ensure that the safety of the workforce is not compromised. This requires an objective overview in detail of all the factors previously considered (e.g. design brief, consultation, and site constraints) to ensure production of a composite solution. In addition to familiarity with the appropriate standards and advice notes, knowledge of the site and the ability to visualise the traffic flow through the works are most important.
D2.12.3 The traffic management designer carries responsibility for the health and safety implications of the detailed traffic management design and must always consider the implications of erection, modification and removal of the traffic management arrangements, including temporary vehicle safety barriers if utilised. As part of the design, the traffic management designer should advise on the minimum standard of maintenance and inspection required to maintain the safety and integrity of the design (see Part 2: Operations, Section O3.7).
D2.12.4 This document provides guidance about minimum signing requirements for temporary traffic management. The signing must always convey accurately to road users, including pedestrians, exactly what is happening and what is expected of them. The demarcation of safety zones needs to be clear.
D2.12.5 For smaller scale works, a schedule of restraints plus an indicative design should be supplied to the contractor who will then produce the detailed traffic management design.
D2.13POST-DESIGN REVIEW
D2.13.1 Upon completion of the detailed traffic management design, the proposals, as a whole, should be reviewed by the project designer and a formal risk assessment undertaken. At this stage the programme for the works should be finalised and the traffic management requirements confirmed.
D2.13.2 For complex schemes, and schemes which result in a change of layout that may raise safety concerns, the post-design review should include an independent road safety audit.
D2.13.3 The post-design review also provides the opportunity to check that the traffic restrictions required by the detailed temporary traffic management design are appropriately covered by traffic regulation orders and that any special sign authorisations and equipment type approvals are in place.
D2.13.4 Following the installation and operation of a significant section of static temporary traffic management or the significant alteration of an existing layout where established traffic patterns are being amended, consideration should be given to carrying out an interim Stage 3 Safety Audit, (see HD 19 "Road Safety Audit" (DMRB 5.2.2)).
D2.14HEALTH AND SAFETY ISSUES
D2.14.1 Where works are in progress on a highway or other road to which the public have access, the Health and Safety at Work etc. Act 1974 (or Health and Safety at Work (NI) Order 1978) requires those responsible for the works to establish and maintain safe systems of work. The Management of Health and Safety at Work Regulations 1999 (MHSW) and the Management of Health and Safety at Work Regulations (NI) 2000 require risk assessments and the principles of prevention be applied to protective measures to control risks identified by the risk assessments. Those responsible for the works are also required to protect the property of those lawfully using the highway from damage. Therefore warnings, barriers and other measures should be placed at or near
17
