Introduction

If you’ve ever driven through Seven Corners in Falls Church, you know the frustration. I’ve missed my turn there countless times, watched drivers cut across multiple lanes in panic, and even rerouted my GPS to avoid the intersection entirely, taking a longer route just to bypass the chaos.

But what started as a personal annoyance turned into genuine curiosity. Why is Seven Corners so bad? And more importantly, could it be better? That question led me to discover that Fairfax County has proposed a $130-140 million Ring Road reconstruction. The price tag alone caught my attention, but what really stood out was that no recent independent comparison to alternative intersection types has been done since the design was selected over a decade ago.

Over the next three months, I’ll be working with two local traffic engineering firms (Wells + Associates and HNTB) to learn Synchro, a professional traffic simulation software, and design alternative intersection configurations for Seven Corners. I’ll compare these alternatives to the county’s Ring Road proposal using traffic data and engineering metrics like Level of Service, delay times, and conflict points. Unlike professional engineers constrained by budgets and political pressures, I can objectively evaluate all options based purely on what works best.

Approximately 25% of traffic fatalities and 50% of traffic injuries in the U.S. occur at intersections. Seven Corners handles over 110,000 vehicles daily with a failing grade (Level of Service F) and delays exceeding 3 minutes during rush hour. Poor intersection design isn’t just annoying. It’s dangerous.

This project is my chance to tackle a real problem affecting my community every single day. I’m excited to learn whether my independent analysis will confirm the county’s choice or suggest better alternatives. Either outcome would be valuable. Validation gives the community confidence in the investment, while discovering better options could save money or improve safety.