Shortly after midnight, the last group of corridor devices switched over to the new traffic management center. Cameras, vehicle detection, dynamic message signs and ramp meters along the corridor now report to the new operations floor. The old center watched the road until the final group was proven, and the corridor never went dark.
A cutover planned like a data center migration
The corridor carries heavy traffic every hour of the day, and the operators who manage incidents cannot lose their view of it, even for a few minutes. That single requirement shaped the whole systems phase of the Smart Corridor & Traffic Management Center. We planned the cutover the way a data center team plans a migration: by device group, with a written method of procedure for each move and a tested way back.
- Parallel operation. The new fiber backbone and the new center ran alongside the legacy system for weeks, so every device could be checked on both before it moved.
- Device groups, not big bangs. The corridor was split into groups by segment and device type, each with its own MOP, its own go and no-go checks and its own rollback.
- Overnight windows. Every switch happened in the lowest-traffic hours, with operators from the owner's team on the floor beside our systems lead.
- Proof before release. A group only moved when every camera showed a picture, every sign took a test message and every detector reported counts to the new center.
Building the backbone under traffic
Before any of that, crews had to build the field side: conduit and fiber along the corridor, sign gantry foundations and structures, cabinets and power drops. Gantry sets and work near the travel lanes happened in planned overnight closures with positive protection wherever the phasing allowed. Fiber was tested and documented splice by splice as it was installed, so the cutover team inherited a backbone with a complete record.
The operators never lost the road. That was the whole job. Everything else was in service of it.
Systems lead, ScottHarry
What remains
The work that remains is mostly off the travel lanes: final restoration, punch items, operator training on the new video wall and incident tools, and the as-built records the owner needs to maintain the system for years to come. Our thanks go to the owner's operators, our trade partners and the crews who worked the corridor night after night.
