TY - JOUR AU - Keay Lisa AU - Ivers R. AU - Coxon K. AU - Clarke E. AU - Brown J. AU - Chevalier A. AU - Rogers K. AU - Chevalier A. AU - Wall J. AB -

Even small increases in vehicle speed raise crash risk and resulting injury severity. Older drivers are at increased risk of involvement in casualty crashes and injury compared to younger drivers. However, there is little objective evidence about older drivers' speeding. This study investigates the nature and predictors of high-range speeding among drivers aged 75-94 years. Speed per second was estimated using Global Positioning System devices installed in participants' vehicles. High-range speeding events were defined as travelling an average 10+km/h above the speed limit over 30 seconds. Most (96%, 182/190) participants agreed to have their vehicle instrumented, and speeding events were accurately recorded for 97% (177/182) of participants. Descriptive analysis examined speeding events by participant characteristics and mileage driven. Regression analyses were used to examine the association between involvement in high-range speeding events and possible predictive factors. While 77% (136/177) of participants were involved in 1+ high-range events, 42% (75/177) were involved in >5 events during 12-months of data collection. Participants involved in high-range events drove approximately twice as many kilometres as those not involved. High-range events tended to be infrequent (median = 6 per 10,000km, IQR = 2-18). The rate of high-range speeding was associated with better cognitive function and attention to the driving environment. This suggests those older drivers with poorer cognition and visual attention may drive more cautiously, thereby reducing their high-range speeding behavior.

AD - a The George Institute for Global Health, Sydney Medical School, The University of Sydney PO Box M201, Missenden Rd, NSW 2050 , Australia.
b The George Institute for Global Health, Sydney Medical School, The University of Sydney; School of Science and Health, University of Western Sydney PO Box M201, Missenden Rd, NSW 2050 Australia Email: kcoxon@georgeinstitute.org.au.
c The George Institute for Global Health, Sydney Medical School, The University of Sydney PO Box M201, Missenden Rd, NSW 2050 Australia Email: krogers@georgeinstitute.org.au.
d Safer Roads Consulting , 53 Lachlan St, Thirroul , NSW , 2515 , Australia Email: aran.chevalier@saferroadsconsulting.com.au.
e The Centre for Road Safety, Transport for NSW , Road Safety Technology Level 3, 84 Crown St, Wollongong , NSW , 2500 , Australia Email: john.wall@transport.nsw.gov.au.
f Neuroscience Research Australia (NeuRA), and School of Medical Science, University of New South Wales Margarete Ainsworth Building , Barker St, Randwick , NSW , 2031 , Australia Email: j.brown@neura.edu.au.
g Kolling Institute of Medical Research, Sydney Medical School, The University of Sydney Level 10 , Kolling Building 6, Royal North Shore Hospital, St Leonards , NSW , 2065 , Australia , Email: elizabeth.clarke@sydney.edu.au.
h The George Institute for Global Health, Sydney Medical School, The University of Sydney PO Box M201, Missenden Rd, NSW , 2050 , Australia Email: rivers@georgeinstitute.org.au.
i The George Institute for Global Health, Sydney Medical School, The University of Sydney , PO Box M201, Missenden Rd, NSW , 2050 , Australia Email: lkeay@georgeinstitute.org.au. AN - 27588929 BT - Traffic Inj PrevTraffic Injury PreventionTraffic Injury Prevention CN - [IF]: 1.413 DP - NLM ET - 2016/09/03 LA - Eng LB - AUS
INJ
FY17 N1 - Chevalier, Anna
Coxon, Kristy
Rogers, Kris
Chevalier, Aran John
Wall, John
Brown, Julie
Clarke, Elizabeth
Ivers, Rebecca
Keay, Lisa
Traffic Inj Prev. 2016 Sep 2:0. N2 -

Even small increases in vehicle speed raise crash risk and resulting injury severity. Older drivers are at increased risk of involvement in casualty crashes and injury compared to younger drivers. However, there is little objective evidence about older drivers' speeding. This study investigates the nature and predictors of high-range speeding among drivers aged 75-94 years. Speed per second was estimated using Global Positioning System devices installed in participants' vehicles. High-range speeding events were defined as travelling an average 10+km/h above the speed limit over 30 seconds. Most (96%, 182/190) participants agreed to have their vehicle instrumented, and speeding events were accurately recorded for 97% (177/182) of participants. Descriptive analysis examined speeding events by participant characteristics and mileage driven. Regression analyses were used to examine the association between involvement in high-range speeding events and possible predictive factors. While 77% (136/177) of participants were involved in 1+ high-range events, 42% (75/177) were involved in >5 events during 12-months of data collection. Participants involved in high-range events drove approximately twice as many kilometres as those not involved. High-range events tended to be infrequent (median = 6 per 10,000km, IQR = 2-18). The rate of high-range speeding was associated with better cognitive function and attention to the driving environment. This suggests those older drivers with poorer cognition and visual attention may drive more cautiously, thereby reducing their high-range speeding behavior.

PY - 2016 SN - 1538-957X (Electronic)
1538-9588 (Linking) SP - 312 EP - 319 T2 - Traffic Inj PrevTraffic Injury PreventionTraffic Injury Prevention TI - Predictors Of Older Drivers' Involvement In High-Range Speeding Behavior VL - 98 Y2 - FY17 ER -