Authors: Ulmer, RG Ferguson, SA Williams, AF Preusser, DF

Citation: Rg. Ulmer et al., Teenage crash reduction associated with delayed licensure in Connecticut, J SAFETY R, 32(1), 2001, pp. 31-41

Authors: Ulmer, RG Preusser, DF Williams, AF Ferguson, SA Farmer, CM

Citation: Rg. Ulmer et al., Effect of Florida's graduated licensing program on the crash rate of teenage drivers, ACC ANAL PR, 32(4), 2000, pp. 527-532

Authors: Braver, ER Preusser, CW Ulmer, RG

Citation: Er. Braver et al., How long-haul motor carriers determine truck driver work schedules: The role of shipper demands, J SAFETY R, 30(3), 1999, pp. 193-204

Authors: Ulmer, RG Preusser, DF Ferguson, SA Williams, AF

Citation: Rg. Ulmer et al., Teenage crash reduction associated with delayed licensure in Louisiana, J SAFETY R, 30(1), 1999, pp. 31-38

Authors: Retting, RA Ulmer, RG Williams, AF

Citation: Ra. Retting et al., Prevalence and characteristics of red light running crashes in the United States, ACC ANAL PR, 31(6), 1999, pp. 687-694