As the weather warms and vacations loom, the streets begin to fill with road-trippers of all makes and models. Tom Vanderbilt offers insight into what you may encounter in Traffic: Why We Drive the Way We Do (and What It Says about Us). Why does the other lane always move faster? Why do more crashes happen on sunny, dry days? How do more roads lead to more traffic? The answers to these questions and more are included in his exhaustively researched but quite readable report. As the title hints, our driving habits reveal more about human nature than about ability. It’s hard to argue with the facts, and reading this book may just make you a better driver.