As nation grows older, traffic safety officials confront questions of who should drive
Association dedicated to crash injury control
Campaigns focus on helmets as safety experts warn bicycle riders to use--and preserve--heads
Defining, counting traffic injuries no easy task as nation assesses toll from this violence
Driving while under influence of alcohol remains major cause of traffic violence
For three quarters of century, safety experts work to keep trains, vehicles from colliding
High-speed chases to high-powered squirters, moving traffic violations pose variety of threats
Highway fund threat is no easy ride for motorcycle helmet law opponents
Simulator designed for advanced traffic research
Traffic death toll may be declining, but experts not ready to celebrate