TY  - JOUR
PY  - 2020//
TI  - Crash rates over time among younger and older drivers in the SHRP 2 naturalistic driving study
JO  - Journal of safety research
A1  - Simons-Morton, Bruce G.
A1  - Gershon, Pnina
A1  - O'Brien, Fearghal
A1  - Gensler, Gary
A1  - Klauer, Sheila G.
A1  - Ehsani, Johnathon Pouya
A1  - Zhu, Chunming
A1  - Gore-Langton, R. E.
A1  - Dingus, Thomas A.
SP  - 245
EP  - 251
VL  - 73
IS  - 
N2  - OBJECTIVE: To examine crash rates over time among 16-17-year-old drivers compared to older drivers.     METHODS: Data were from a random sample of 854 of the 3,500 study participants in SHRP 2, a U.S. national, naturalistic driving (instrumented vehicle) study. Crashes/10,000 miles by driver age group, 3-month period, and sex were examined within generalized linear mixed models.     RESULTS: Analyses of individual differences between age cohorts indicated higher incidence rates in the 16-17-year old cohort relative to older age groups each of the first four quarters (except the first quarter compared to 18-20 year old drivers) with incident rate ratios (IRR) ranging from 1.98 to 18.90, and for the full study period compared with drivers 18-20 (IRR = 1.69, CI = 1.00, 2.86), 21 to 25 (IRR = 2.27, CI = 1.31, 3.91), and 35 to 55 (IRR = 4.00, CI = 2.28, 7.03). Within the 16-17-year old cohort no differences were found in rates among males and females and the decline in rates over the 24-month study period was not significant.     CONCLUSIONS: The prolonged period of elevated crash rates suggests the need to enhance novice young driver prevention approaches such as Graduated Driver's Licensing limits, parent restrictions, and post-licensure supervision and monitoring. Practical Applications: Increases are needed in Graduated Driver's Licensing limits, parent restrictions, and postlicensure supervision and monitoring.<p />  <p>Language: en</p>
LA  - en
SN  - 0022-4375
UR  - http://dx.doi.org/10.1016/j.jsr.2020.03.001
ID  - ref1
ER  -