title: Fatigue and crashes: the case of freight transport in Colombia.
abstract: Truck drivers have been involved in a significant number of road fatalities in Colombia. To identify variables that could be associated with crashes in which truck drivers are involved, a logistic regression model was constructed. The model had as the response variable a dichotomous variable that included the presence or absence of a crash during a specific trip. As independent variables the model included information regarding a driver's work shift, with variables that could be associated with driver's fatigue. The model also included potential confounders related with road conditions. With the model, it was possible to determine the odds ratio of a crash in relation to several variables, adjusting for confounding. To collect the information about the trips included in the model, a survey among truck drivers was conducted. The results suggest strong associations between crashes (i.e., some of them statistically significant) with the number of stops made during the trip, and the average time of each stop. Survey analysis allowed us to identify the practices that contribute to generating fatigue and unhealthy conditions on the road among professional drivers. A review of national regulations confirmed the lack of legislation on this topic.
authors.affiliation: Urban and Regional Sustainability Group, Universidad de Los Andes, Carrera 1 Este No. 19 A - 40, Edificio Mario Laserna, Bogotá, Colombia.
authors.forename: Nathaly M
authors.initials: NM
authors.lastname: Torregroza-Vargas
authors.affiliation: Urban and Regional Sustainability Group, Universidad de Los Andes, Carrera 1 Este No. 19 A - 40, Edificio Mario Laserna, Bogotá, Colombia. Electronic address: jbocarej@uniandes.edu.co.
authors.forename: Juan Pablo
authors.initials: JP
authors.lastname: Bocarejo
authors.affiliation: Department of Civil and Environmental Engineering, Universidad de Los Andes, Bogotá, Colombia.
authors.forename: Juan P
authors.initials: JP
authors.lastname: Ramos-Bonilla
mesh_terms: D000063:Accidents, Traffic / Q000706:statistics & numerical data*; D000328:Adult; D003105:Colombia / Q000453:epidemiology; D005221:Fatigue / Q000453:epidemiology*; D005260:Female; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D018986:Motor Vehicles; D016017:Odds Ratio; D014186:Transportation / Q000706:statistics & numerical data*; D014940:Work Schedule Tolerance; D016526:Workload / Q000331:legislation & jurisprudence; D055815:Young Adult
keywords: Fatigue; Logistic regression model; Modelling data analysis; Road safety; Truck drivers