This study provides advice on best current practice on post-incident recovery, planning of repairs and contingency planning for a range of generic incidents in highway tunnels. The advice is based on a comprehensive review of available documentation on past incidents and practice, and other relevant current literature. The generic range of incidents which should be considered include vehicle breakdown, damage-only accident, debris in carriageway, minor fires, injury accident, spills, shed load, dealing with over height vehicle , external electrical supply failure, flood, serious fire, explosion, and serious release of noxious liquid or gas. General principles for good practice are developed and it is recommended that planning of post-incident recovery be carried out with that of the emergency phase. This will ensure a rapid, co-ordinated and integrated response to all incidents, with post-incident recovery considered from the very beginning of the emergency phase.
Post-incident recovery comprises activities such as cleaning and clearing up, disposal of waste, inspections, repairs, refurbishment, traffic management and keeping the public informed of progress. These activities may start during the emergency phases, provided priorities such as saving life, containing the incident and preserving evidence are not compromised. The objective of post-incident recovery is to minimise delays to road users by returning the tunnel to normal working as soon as possible, whilst limiting adverse environmental impact and undue expenditure. It is important that there are clearly identified roles and responsibilities and resilient management procedures.

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