While working at the Florida Department of Transportation in several roles including as the State’s Traffic Studies Engineer, State Arterial Management Engineer, and the Connected and Automated Vehicles (CAV) lead, Raj Ponnaluri, PE, PhD, PTOE, PMP, senior vice president and Transportation Systems Management and Operations (TSMO) Practice Lead, WSP in the U.S., accepted a small assignment that unleashed a career-defining passion to prevent wrong-way driving crashes. He shares below how and why his work is saving lives across Florida and other communities nationwide.
How did your career lead you to focus on wrong-way driving safety?
My career has been centered on transportation operations and intelligent transportation systems for more than 30 years. I started in traffic operations and ITS deployments, working on complex highway and transit systems across Florida and the western United States. That foundation gave me a strong appreciation for how data, technology, and system design can directly influence safety outcomes.
When I joined the Florida Department of Transportation as the State Traffic Studies Engineer, I was asked to assist with a wrong-way driving (WWD) effort. Once we began analyzing the data, it was clear that WWD was a far more serious and systemic problem than anyone realized. That experience ultimately led me to spend more than a decade developing research, design standards, operational strategies and technology deployments to address wrong-way driving at scale. At WSP, I now help agencies nationwide with program development and applying those lessons to their own systems.
What makes wrong-way driving such a challenging safety issue, and why does data matter so much?
Wrong-way driving crashes are among the most severe on our roadway networks, particularly on freeways. When vehicles collide head-on at highway speeds, the relative impact speed is essentially doubled, which is why these crashes so often result in multiple fatalities.
Data is the starting point for addressing this issue effectively. In Florida, we conducted a comprehensive statewide analysis that revealed clear patterns, including late-night crashes, frequent involvement of impaired drivers and strong clustering at specific ramp locations. Our data-driven approach allowed us to prioritize the locations and treatments that would have the greatest impact.
Florida is often cited as one of the few states with a national model for wrong-way driving programs.
What made that effort successful?
The key was treating wrong-way driving as a program, not a single project. We combined engineering, technology, operations, enforcement, education and human factors into a coordinated strategy.
Florida enhanced signing and pavement markings beyond minimum standards and embedded those improvements in its Design Manual. At the same time, technology deployments capable of detecting wrong-way movements and LED-enhanced signs capable of warning wrong-way driver, were integrated with traffic management centers, allowing for rapid response by operators and law enforcement. That systemwide, data-driven approach is what delivered lasting results.
