Accident severity analysis using ordered probit model

To reduce injuries in road crashes, better understanding is needed between the relationship of injury severity and risk factors. This study seeks to identify the contributing factors affecting crash severity with broad considerations of driver characteristics, roadway features, vehicle types, pedestrian characteristics and crash characteristics using an ordered probit model. It also explores how the interaction of these factors will affect accident severity risk. Three types of accidents were investigated: two-vehicle crashes, single vehicle crashes and pedestrian accidents. The reported crash data in Singapore from 1992 to 2001 were used to illustrate the process of parameter estimation. Several factors such as vehicle type, road type, collision type, location type, pedestrian age, time of day of accident occurrence were found to be significantly associated with injury severity. It was also found that injury severity decreases over time for the three types of accident investigated.

[1]  W Garmoe.  Rear-end collisions. , 1998, Archives of physical medicine and rehabilitation.

[2]  R. Whitfield,et al.  Predicting injury risk with "New Car Assessment Program" crashworthiness ratings. , 1988, Accident; analysis and prevention.

[3]  M A Abdel-Aty,et al.  An assessment of the effect of driver age on traffic accident involvement using log-linear models. , 1998, Accident; analysis and prevention.

[4]  Kung-Jong Lui,et al.  An application of a conditional logistic regression to study the effects of safety belts, principal impact points, and car weights on drivers' fatalities , 1988 .

[5]  Shauna L. Hallmark,et al.  Factors Related to More Severe Older Driver Traffic Crash Injuries , 2002 .

[6]  Young-Jun Kweon,et al.  Driver injury severity: an application of ordered probit models. , 2002, Accident; analysis and prevention.

[7]  Fred L. Mannering,et al.  Predicting Vehicle Occupancies from Accident Data: An Accident Severity Approach , 1998 .

[8]  M C Frick,et al.  Car size or car mass: which has greater influence on fatality risk? , 1992, American journal of public health.

[9]  J. A. Calvin.  Regression Models for Categorical and Limited Dependent Variables , 1998 .

[10]  Asad J. Khattak,et al.  Applying the Ordered Probit Model to Injury Severity in Truck-Passenger Car Rear-End Collisions , 1998 .

[11]  W S Jessie,et al.  The efficacy of safety policies on traffic fatalities in Singapore. , 1998, Accident; analysis and prevention.

[12]  G. Guyatt,et al.  The independent contribution of driver, crash, and vehicle characteristics to driver fatalities. , 2002, Accident; analysis and prevention.

[13]  M C Frick,et al.  Mass ratio and relative driver fatality risk in two-vehicle crashes. , 1993, Accident; analysis and prevention.

[14]  E R Braver,et al.  Two-vehicle side impact crashes: the relationship of vehicle and crash characteristics to injury severity. , 1997, Accident; analysis and prevention.

[15]  L Evans,et al.  Car mass and fatality risk: has the relationship changed? , 1994, American journal of public health.

[16]  G W Mercer.  Influences on passenger vehicle casualty accident frequency and severity: unemployment, driver gender, driver age, drinking driving and restraint device use. , 1987, Accident; analysis and prevention.

[17]  A. Khattak,et al.  Effect of Speed Limit Increases on Crash Injury Severity: Analysis of Single-Vehicle Crashes on North Carolina Interstate Highways , 1999 .

[18]  A. Shibata,et al.  Risk factors of fatality in motor vehicle traffic accidents. , 1994, Accident; analysis and prevention.

[19]  C. Mansfield,et al.  Flipped out of control: single‐vehicle rollover accidents in the Northern Territory , 2002, The Medical journal of Australia.

[20]  A. Khattak,et al.  Injury Effects of Rollovers and Events Sequence in Single-Vehicle Crashes , 2000 .

[21]  S. Dissanayake,et al.  Analysis of Severity of Young Driver Crashes: Sequential Binary Logistic Regression Modeling , 2002 .

[22]  H. Sjögren,et al.  Elderly in the traffic environment: analysis of fatal crashes in northern Sweden. , 1993, Accident; analysis and prevention.

[23]  Toshiyuki Yamamoto,et al.  Bivariate ordered-response probit model of driver's and passenger's injury severities in collisions with fixed objects. , 2004, Accident; analysis and prevention.

[24]  Roger P Bligh,et al.  Crashworthiness of Roadside Features Across Vehicle Platforms , 1999 .

[25]  Hoong Chor Chin,et al.  An analysis of motorcycle injury and vehicle damage severity using ordered probit models. , 2002, Journal of safety research.

[26]  P Lövsund,et al.  Life-threatening and disabling injuries in car-to-car side impacts--implications for development of protective systems. , 1993, Accident; analysis and prevention.

[27]  W Yuan,et al.  The effectiveness of the 'ride-bright' legislation for motorcycles in Singapore. , 2000, Accident; analysis and prevention.

[28]  Asad J. Khattak,et al.  Injury Severity in Multivehicle Rear-End Crashes , 2001 .

[29]  Jean T. Shope,et al.  ADOLESCENT DRIVING: CHARACTERISTICS ASSOCIATED WITH SINGLE-VEHICLE AND INJURY CRASHES , 1996 .

[30]  F Mannering,et al.  Analysis of injury severity and vehicle occupancy in truck- and non-truck-involved accidents. , 1999, Accident; analysis and prevention.

[31]  J G Viner.  Rollovers on sideslopes and ditches. , 1995, Accident; analysis and prevention.

[32]  C J O'Donnell,et al.  Predicting the severity of motor vehicle accident injuries using models of ordered multiple choice. , 1996, Accident; analysis and prevention.

[33]  John G Viner,et al.  RISK OF ROLLOVER IN RAN-OFF-ROAD CRASHES , 1995 .

[34]  Fred Mannering,et al.  Impact of roadside features on the frequency and severity of run-off-roadway accidents: an empirical analysis. , 2002, Accident; analysis and prevention.

[35]  Fred L. Mannering,et al.  An exploratory multinomial logit analysis of single-vehicle motorcycle accident severity , 1996 .

[36]  Sunanda Dissanayake,et al.  Factors influential in making an injury severity difference to older drivers involved in fixed object-passenger car crashes. , 2002, Accident; analysis and prevention.

[37]  L Evans.  Fatality risk for belted drivers versus car mass. , 1985, Accident; analysis and prevention.

[38]  L Evans,et al.  Serious or fatal driver injury rate versus car mass in head-on crashes between cars of similar mass. , 1987, Accident; analysis and prevention.

[39]  J. Richard Stewart,et al.  FREQUENCY AND SEVERITY OF CRASHES INVOLVING ROADSIDE SAFETY HARDWARE BY VEHICLE TYPE , 1994 .