car ownership, mileage, and risky driving among young intermediate drivers

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Car ownership, mileage, and risky driving among young intermediate drivers Presenter : Bridie Scott-Parker, PhD Candidate (Prof Barry Watson, Dr Mark King, Dr Melissa Hyde) Australasian College of Road Safety National Conference, Melbourne, 1-2 September 2011. Extent of the Problem. - PowerPoint PPT Presentation

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Slide 1

1Car ownership, mileage, and risky driving among young intermediate drivers

Presenter: Bridie Scott-Parker, PhD Candidate

(Prof Barry Watson, Dr Mark King, Dr Melissa Hyde)

Australasian College of Road Safety National Conference, Melbourne, 1-2 September 2011Extent of the ProblemYoung drivers (17-25 yrs) in Australia, 200826% of all road fatalities80% were maleYoung drivers (17-24 yrs) in Queensland, 200813% of licensed driver/ rider population20% of road fatalities33% of all fatalities involved young drivers/ riders

2061234570Years after licensing0100200300400500600No. drivers in casualty crashesProvisional licence phaseLearnerlicencephaseOpen licence phaseSource: Queensland Government, 2005Casualty Crash Involvement in Queensland by Licence Type3Key changes to Queenslands Graduated Driver Licensing (GDL) Program, July 2007Learner 16 years of age (was 16.5 yrs)12 month minimum duration (was 6 months)100 hours supervised practice recorded in logbookProvisional Two stages (was one three-year Provisional licence)Provisional 1: 12 month minimum duration, night-time passenger restrictions

Hazard Perception Test

Provisional 2: 24 month minimum duration

44Vehicle OwnershipHigh rates of ownership amongst the most-inexperienced drivers28% - 70% of novices own car/primary accessOwnership rates increase considerably during Provisional periodOwnership associated with more risky drivingSpeeding, particularly at night and with friends as passengersCrashes, including hooning crash involvementOffencesGreater mileageLonger ownership duration = more offences and crash involvement

55Longitudinal Research Survey 11032 drivers 17-19 years (609 females)Queensland-wide sample, recruited April-June 2010 when passed practical driving assessmentExperiences and behaviours as a Learner driver

Survey 2 6 months of driving with a Provisional P1 licence355 drivers 17-20 years (247 females)Experiences and behaviours as a Provisional driver341 drivers provided ownership information

66Results: ExposureDistance Average 175 km/week52% 100 km/weekDuration Average 7.5 hours/week87% 10 hours/weekConsistency throughout Provisional period17% greater exposure at first47% same exposure throughout 16% greater exposure now

77Results cont.75% of Provisional drivers owned their own carCrash involvement since gaining their Provisional licence (6 months earlier)10% of drivers (male = female)Offence detected by Police18% of males10% of females

889Significant socio-demographic differences Characteristic

Own carAustralian-born Yes No80.8%54.8%English-speaking home Yes No80.2%40.0%Studying Yes No74.5%83.9%Employed Yes No82.5%67.1%Shorter duration = younger at independent driving

Mention other sociodemographics (age, gender) nsMention pre-licence driving and unsupervised ns910Significant exposure differencesCharacteristic

Own carNo carDuration of Learner period M (SD)15.77 (5.14)18.70 (7.17)Hours in Learner logbook M (SD)107.03 (16.03)102.48 (20.01)Exposure: Hours M (SD)7.64 (8.80)6.25 (9.84)Exposure: Kilometres M (SD)193.42 (170.23)97.73 (96.81)Shorter duration = younger at independent driving

Mention other sociodemographics (age, gender) nsMention pre-licence driving and unsupervised ns1011Characteristic

Own carNo carTalk out of ticket (punishment avoidance) No

100.0%77.4%0.0%22.6%Behaviour of Young Novice Drivers Scale (BYNDS) M (SD)

77.20 (15.37)72.42 (13.76)Risky Exposure subscale (BYNDS) M (SD)

26.01 (5.00)22.68 (5.16)Significant risky behaviours Talk out of ticket highly motivated as a car owner

Risky exposure = considerable, main problem (night, weekend, with friends as passengers)

11Other findings of interest95% of crashes reported by drivers residing in urban areasProvisional drivers who reported a crash as a Learner were less likely to report owning a carProvisional drivers who reported an offence had been detected as a Learner or as a Provisional driver were significantly more likely to report owning a car reported significantly greater duration and distance of exposureProvisional drivers who reported more exposure recently reported less crash involvement more offences had been detected

1212Discussion & Future ResearchHigh rate of ownership (75%) among the most inexperienced driversConsistent with prior research: no gender differences; owners more likely to be employed; greater exposure; more risky driving, crashes, offences Inconsistent with prior research: higher ownership rates in rural areas (88% vs 77% in urban areas, ns)Future research: When do they get the car? Car characteristics? Who pays for it? Is their driving monitored by Mum/Dad?Greater exposure than previously reported (particularly important as self-report is frequently an underestimate)Future research: When/why driving? Where? With whom?

1313Learners who crashed less likely to own a car: Availability issue? Apprehension? Punishment?Every Learner who offended had a car as a Provisional driver: More exposure, offences, crashes, talking out of fineOwners reported a shorter Learner duration and more hours in the logbook: Highly motivated? Vehicle ownership plays a role?Research limitations: Self-report; Attrition (70% of Survey 2 participants were female)

14Discussion & Future Research cont.14Discussion & Future Research cont.GDL programs may need to incorporate additional education for parents and novices Family responsibilities frequently change with licensureFamily car may be safer vehicle than young novice driver can afford themselvesIncreased risks associated with ownership (more exposure, more risky driving, more crashes, more offences)Monitor car use (journey characteristics, passenger carriage)

1515Researchers have suggested owners are predisposed to risky driving, and the vehicle allows this to happen (psychological states/traits)No differences in psychological distress (anxiety, depression)No differences in sensation seeking propensity and sensitivity to rewardSuggests traits/states do not influence ownership, rather ownership allows these traits/states to influence their behaviour

16Discussion & Future Research cont.ConclusionsMost novice drivers have their own car within six months of independent drivingOwning a car was associated with risky behaviour (Risky driving, more exposure, crashes, offences)GDL programs should incorporate an education component specifically addressing the increased risks for the novice who owns their car

171718Questions?

Contact Details: Bridie Scott-Parker, PhD CandidateTelephone: +61 7 3138 7727Email: b.scott-parker@qut.edu.au

Mark your Diaries!International Council on Alcohol, Drugs and Traffic Safety Conference (ICADTS T2013)August 2013, Brisbane Convention and Exhibition Centre

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