TSIP

TSIP is a program within a mid-size U.S. city's Department of Transportation managing traffic signal priority for the city's bus rapid transit network. TSP hardware was installed at 140+ intersections, allowing buses to request early green lights or extended greens to reduce delay.

The operations team — four signal engineers responsible for the entire network — had almost no visibility into how well the system was actually performing. Their primary tool was a legacy reporting system that generated weekly CSV exports: rows of intersection IDs, request counts, and grant/deny rates. No visualization. No filtering. No real-time view.

The team was entirely reactive. Engineers learned about problem intersections from bus operator complaints, then spent hours pulling logs to confirm what was happening. When a council member asked why Route 4 was consistently late, the team couldn't answer without days of manual data analysis.

The data existed — 143 TSP-enabled intersections generating continuous performance logs. The problem was that the data couldn't tell the engineers where to look.