An article discussing Tom Vanderbilt's new book, Traffic: Why We Drive the Way We Do (and What It Says About Us).

When it comes to planning highways and roads, greater convenience does not necessarily mean fewer accidents. Perceived advances in safety—wider, straighter roadways and more electronic traffic signals—may make drivers too comfortable.

By Glenn Harlan Reynolds
Published in the October 2009 issue of Popular Mechanics

Also, a good reference to the Peltzmann Effect.