How do you ensure that 45 tunnel systems work together safely within 10 months?

A4 tunnel Delft-Schiedam

The new A4 Delft-Schiedam highway, a seven kilometre long road ensuring less congestion on the A13, opened in December 2015. The Kethel tunnel, a 2 kilometre long land tunnel that runs through residential areas, is one component of the highway. The ICT Group was called in to ensure the safe control of all technical tunnel equipment.

The challenge

The National Tunnel Standard (Landelijk Tunnelstandaard – LTS) contains information on how barriers, lighting, fire detection systems, ventilation systems and traffic lights must behave in the event of a fire or an accident. This information leads to Software Requirements Specifications (SRS) to be drawn up. These are a set of requirements for the operating and control software for the facilities and equipment. The biggest challenge was ensuring that all 45 subsystems would work together safely during emergencies. This makes designing the operating and control software a highly complex task. The project also had to be completed and delivered within ten months.

Completing the project

Contractor combination A4All enlisted ICT Group on the basis of its expert knowledge in the field of infrastructure and its extensive experience with the platform on which the software was built. In addition, ICT could make the right people available to carry out on-site development, building and testing of the operating and control software. The team met the deadline by delivering separate software modules in two week long ‘sprints’. This enabled rapid progress to be made without sacrificing the stringent quality and safety requirements. After extensive testing, which also involved various emergency services, the tunnel was opened on schedule in December 2015.

Project: A4 tunnel Delft-Schiedam
Opdrachtgever: Ministry of Infrastructure and the Environment / Contractor combination A4All

Contact for this case

Roel de Backer

Business Unit Manager Water & Infra

t +31 6 50 20 23 66


GDPR Consent

The ICT Group website uses cookies for various functions in the website; Functional Cookies, Website Statistics, Personalised Advertising and Social Media. Advertising and Social Media cookies collect information about activities of individual users. This allows third parties to display personalised adverts to you and to allow you the option to share content from this site to Social Media platforms.

By continuing to use this website you are allowing us to place these cookies. The Cookie Settings voor de ICT Group website can be changed or revoked at any time. You can reach the settings throught the Cookie Settings button as well as through the link in the footer of every page on this site.

Read our privacy policy here | Close this bar
Cookie Settings