How fast would you Managing speed is at the core of Vision Zero - PowerPoint PPT Presentation

Název akce, místo, datum Název akce, místo, datum Introduction (1/2) Introduction (2/2) � Speed = the most influential driving risk factor The study investigates the hypothesized relationship: How fast would you � Managing speed is at the core of Vision Zero approach Characteristics Speed limit belief Preferred speed (or should you) Self- � Characteristics of drivers, roads, etc. → speed choice Credible drive here? explaining speed limit ? road ? � Self-explaining roads → speed limit belief (credibility) Research questions: - Which characteristics influence speed(ing)? Ji ř í Ambros, Richard Turek - Are the analyzed roads self-explaining? - Are their speed limits credible? - Do drivers comply with the speed limit? Eva Šragová, Matúš Šucha 32 nd ICTCT Conference, 24-25 th October 2019, Warsaw 32 nd ICTCT Conference, 24–25 th October 2019, Warsaw Ji ř í Ambros, jiri.ambros@cdv.cz Ji ř í Ambros, jiri.ambros@cdv.cz Název akce, místo, datum Název akce, místo, datum Název akce, místo, datum Data (1/2) Data (2/2) Method � Response variable: speed (km/h) � Explanatory variables from 4 questionnaries � Two linear mixed-effect models: ( n = 70; 40 males + 30 females; age 20–78; driving license) How fast should you 1. to see what affects preferred driving speed drive there? General questionnaire (gender, age, driving experience, etc.) Speed Posted 2. to compare posted speed limit / speed limit belief / preferred Personality questionnaire TVP (129 items) limit belief speed limit speed Driver Behaviour Questionnaire (50 items) Arnett Inventory of Sensation Seeking (20 items) Preferred Observed � Road characteristics speed speed (width, vegetation, crossings, overtaking…) How fast would you drive there? 32 nd ICTCT Conference, 24–25 th October 2019, Warsaw 32 nd ICTCT Conference, 24–25 th October 2019, Warsaw 32 nd ICTCT Conference, 24–25 th October 2019, Warsaw Ji ř í Ambros, jiri.ambros@cdv.cz Ji ř í Ambros, jiri.ambros@cdv.cz Ji ř í Ambros, jiri.ambros@cdv.cz

Název akce, místo, datum Název akce, místo, datum Název akce, místo, datum Results What influenced preferred speed? Results Results Examples of factors associated with… Relationships between Are the analyzed roads self-explaining? types of speed? … speed increase … speed decrease � Posted speed limit × speed limit belief Higher road class Pedestrian crossing/pavement � Statistically significant EŠ1 � Speed limit belief ∼ 8 km/h higher ! Wider road Vegetation (model differences (model R 2 = 70 %) R 2 = 81 %) Extrovert drivers Female drivers � The biggest difference on roads without pedestrian facilities � All speed types exceed the Openness to experience Drivers identifying as cyclists posted speed limit speed limit belief + 1 km/h → preferred speed + 0.5 km/h Interestingly: age and experience … no association with preferred speed 32 nd ICTCT Conference, 24–25 th October 2019, Warsaw 32 nd ICTCT Conference, 24–25 th October 2019, Warsaw 32 nd ICTCT Conference, 24–25 th October 2019, Warsaw Ji ř í Ambros, jiri.ambros@cdv.cz Ji ř í Ambros, jiri.ambros@cdv.cz Ji ř í Ambros, jiri.ambros@cdv.cz Název akce, místo, datum Název akce, místo, datum Název akce, místo, datum Results Results Conclusions (1/2) Are the speed limits credible? Do drivers comply with the speed limits? Limitations: Speeds based on photographs – external validity ? Potential observer effect ? � Speed limit belief × preferred speed � Posted speed limit × preferred speed Small sample EŠ2 EŠ3 � Preferred speed ∼ 2 km/h lower (not significantly) � Preferred speed ∼ 6 km/h higher ! Are the analyzed roads self-explaining? Are the speed limits credible? NO � � Potential observer effect? � Again, the biggest difference on roads without pedestrian Do drivers comply with the speed limits? facilities All speed types exceeded the speed limits ! (a type of reactivity in which individuals modify an aspect of their But road modifications may reduce the speeds behavior in response to their awareness of being observed) → roads with pedestrian facilities more self-explaining ? 32 nd ICTCT Conference, 24–25 th October 2019, Warsaw 32 nd ICTCT Conference, 24–25 th October 2019, Warsaw 32 nd ICTCT Conference, 24–25 th October 2019, Warsaw Ji ř í Ambros, jiri.ambros@cdv.cz Ji ř í Ambros, jiri.ambros@cdv.cz Ji ř í Ambros, jiri.ambros@cdv.cz

Název akce, místo, datum Conclusions (2/2) Which characteristics influence speed? Extrovert drivers, Openness to experience… Thank you for your attention Female drivers, Drivers identifying as pedestrians… These should be considered: Ji ř í Ambros � in psychological driving assessment jiri.ambros@cdv.cz � in training of drivers CDV – Transport Research Centre Líše ň ská 33a, 636 00 Brno, Czech Republic 32 nd ICTCT Conference, 24–25 th October 2019, Warsaw www.cdv.cz/en/ Ji ř í Ambros, jiri.ambros@cdv.cz