title: Eliciting road traffic injuries cost among Iranian drivers' public vehicles using willingness to pay method.
abstract: OBJECTIVE
  To allocate resources at the national level and ensure the safety level of roads with the aim of economic efficiency, cost calculation can help determine the size of the problem and demonstrate the economic benefits resulting from preventing such injuries. This study was carried out to elicit the cost of traffic injuries among Iranian drivers of public vehicles.
  
  
  METHODS
  In a cross-sectional study, 410 drivers of public vehicles were randomly selected from all the drivers in city of Tehran, Iran. The research questionnaire was prepared based on the standard for willingness to pay (WTP) method (stated preference (SP), contingent value (CV), and revealed preference (RP) model). Data were collected along with a scenario for vehicle drivers. Inclusion criteria were having at least high school education and being in the age range of 18 to 65 years old. Final analysis of willingness to pay was carried out using Weibull model.
  
  
  RESULTS
  Mean WTP was 3,337,130 IRR among drivers of public vehicles. Statistical value of life was estimated 118,222,552,601,648 IRR, for according to 4,694 dead drivers, which was equivalent to 3,940,751,753 $ based on the dollar free market rate of 30,000 IRR (purchase power parity). Injury cost was 108,376,366,437,500 IRR, equivalent to 3,612,545,548 $. In sum, injury and death cases came to 226,606,472,346,449 IRR, equivalent to 7,553,549,078 $. Moreover in 2013, cost of traffic injuries among the drivers of public vehicles constituted 1.25% of gross national income, which was 604,300,000,000$. WTP had a significant relationship with gender, daily payment, more payment for time reduction, more pay to less traffic, and minibus drivers.
  
  
  CONCLUSIONS
  Cost of traffic injuries among drivers of public vehicles included 1.25% of gross national income, which was noticeable; minibus drivers had less perception of risk reduction than others.
authors.affiliation: Department of Epidemiology, Safety Promotion and Injury Prevention Research Center of Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Elaheh
authors.initials: E
authors.lastname: Ainy
authors.affiliation: Department of Epidemiology, Safety Promotion and Injury Prevention Research Center of Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Hamid
authors.initials: H
authors.lastname: Soori
authors.affiliation: Department of Statistics, Statistics School of Shahid Beheshti University, Tehran, Iran.
authors.forename: Mojtaba
authors.initials: M
authors.lastname: Ganjali
authors.affiliation: Department of Statistics, Statistics School of Shahid Beheshti University, Tehran, Iran.
authors.forename: Taban
authors.initials: T
authors.lastname: Baghfalaki
keywords: Contingent value; drivers of public vehicles; revealed preference; stated preference; willingness to pay