Migration in a 24/7 Environment
The Westerscheldetunnel has a total of 14 lanes, seven northbound and seven southbound. Each side counts three attended lanes with toll booths, three card payment lanes, and one lane for On Board Units (OBU). Every lane is fitted with roadside equipment and a dedicated lane workstation referred to as the front-office. That workstation forwards the transactions generated by each passing vehicle to the back-office, a centralized database in which transactions are handled, can be consulted and reported on.
Development and approval of the new systems had to be managed in a mock setup at on off-site facility in order to mitigate risk and allow for sufficient adjustment opportunities. Once the systems had been approved off-site, the migration was initiated with the upgrade of the first two lanes.