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Table 3 Crash Types Estimation Results

From: A Nested Logit analysis of the influence of distraction on types of vehicle crashes

Variable Coefficient
Single-Vehicle crash Two-vehicle crash
Run-off-road Collision with an object Collision with a pedestrian Rear-end Head-on Angular Sideswipe opposite direction Sideswipe same direction
Characteristics of the driver
 Driver’s gender
  Female 0.069a
 Driver’s age
  16–24 0.214a −0.665 − 0.255 − 0.351b − 0.279
  60 abovea 0.356b − 0.322 − 0.282a
 Driver’s Impairment
  Under the Influence of Alcohol, Drugs 1.928b 1.928 1.367b 0.588a 0.670
 Safety Equipment
  Not Using Seatbelts 1.165 0.951 1.042 0.416
 Driver’s Distraction
  Cognitive 0.447 0.642b 0.734 0.335 0.639
  Passenger Related 2.069 2.598 0.789a 1.278b
  In-Vehicle Tasks 2.062 2.505 1.195
  Out-Vehicle 1.287 2.076 1.428 0.928a
  Cellphone 1.349 1.885 0.502a 0.818a
 Speeding
  Driving Over the Speed Limit 2.483 2.082 1.968 0.889 0.446b
Conditional and Environmental Properties
 Passenger
  Presence of Passengers −0.379 −0.379 − 0.379 − 0.128
 Vision condition
  Vision obscured −0.759 1.072 −0.972 − 0.841
 Light condition
  Dark – Not Lighted 0.998 1.597 1.776 −0.231b 0.648 0.503
  Dark-Lighted 0.508 1.008 0.755 −0.183 0.258b
  Down or Dusk 0.387b 0.662b 0.873 0.228a −0.773
 Weather condition
  Rainy 0.599 0.131a 0.273 0.153a 0.391a
  Snowy 2.357 1.209a 1.057a 1.920 1.902 1.962 1.356b
 Crash day
  Weekend 0.218 0.317 −0.353 −0.144b 0.216a
 Time of Day
  Peak Hour (6–9 or 15–19) −0.242 0.262b 0.129
Characteristics of the road
 Road alignment
  Curves 1.434 1/552b 1.151
 Surface condition
  Dry 0.182 2.96 0.179 2.95
 Junction Type
  Intersections −4.102 −3.737 −2.719 −1.854 −1.727 −3.463a −3.195
  Other −3.584 −4.256 −3.153 −2.441 −1.965 − 3.321 − 3.321
 Speed Limit
  Up to 35 mi/hr 1.543 0.763 −0.728
  Above 50 mi/hr 0.952 0.566 0.952 0.494
 Highway type
  Interstate highway 1.411 1.854 1.689 1.676
 Zone type
  Urban zone 0.176b 0.119a 0.177
 Traffic way Description
  Two Way 1.325 1.184b −0.465
 Number of lane
  More than one lane in each direction −0.380 − 0.380 −0.380 − 0.346 0.218
 Constant 0.980 −0.568 0.565 1.752 2.368 −0.980 0.708
  1. asignificant at the 10% level, bsignificant at the 5% level, the numbers without any mark are significant at the 1% level, “-”not significant