Some planned overnight weekend works will continue as part of an improvement schedule, so please check the website for more information.
- Better emergency access for maintenance, more emergency points and improved escape route signs
- Upgrades to CCTV, ventilation, drainage, fire mains and hydrants
- Improved detectors for smoke, stopped vehicles, pedestrians debris and over-height vehicles
- New lighting and communications systems
- Automated tunnel closure system
- Variable message and lane control signs