Alcohol, Stress-Related Factors, and Short-Term Absenteeism Among Urban Transit Operators |
Cunradi, Carol B.; Greiner, Birgit A.; Ragland, David R.; Fisher, June M. |
2005 |
Journal Article |
Traffic Volume and Collisions Involving Transit and Nontransit Vehicles |
Ragland, David R.; Hundenski, Ronald J.; Holman, Barbara L.; Fisher, June M. |
1991 |
Journal Article |
Problems With Vision Associated With Limitations or Avoidance of Driving in Older Populations |
Satariano, William A.; MacLeod, Kara E.; Kohn, Theodore E.; Ragland, David R. |
2004 |
Journal Article |
Observational Survey of Cell Phone Use and Texting by California Drivers, 2011 |
Cooper, Jill F.; Ragland, David R.; Ewald, Katrin; Wasserman, Lisa; Murphy, Christopher J. |
2012 |
Journal Article |
Rail Crossings: A Strategy to Select Countermeasure Improvements for Rail-Highway Crossings in California |
Cooper, Douglas L.; Ragland, David R. |
2007 |
Journal Article |