To be honest, I have only skimmed it so far, but it gets into the psychology of traffic control without getting overly technical. Try your local library. Mine has 2 copies!
There is a pretty extensive website and blog for the book here: http://tomvanderbilt.com/traffic/
"Henry Barnes, the legendary traffic commissioner of New York City in the 1960s, reflecting on his long career in his charmingly titled memoir The Man with the Red and Green Eyes, observed that “traffic was as much an emotional problem as it was a physical and mechanical one.” People, he concluded, were tougher to crack than cars. “As time goes on the technical problems become more automatic, while the people problems become more surrealistic.”
Vaughn