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Table 1 Data Descriptive

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

Variable Percentage Standard Deviation
Characteristics of the driver
 Driver’s gender
  Female 47.1 0.499
 Driver’s age
  16–24 24.6 0.431
  25–60 62.4 0.484
  60 above 13.0 0.336
 Driver’s Impairment
  Under the Influence of Alcohol, Drugs 2.1 0.144
  Asleep or Fatigue 0.9 0.093
 Safety Equipment
  Not Using Seatbelts 3.2 0.176
  Wrong Use of Equipment 0.3 0.053
 Driver’s Distraction
  No Distraction 92.4 0.264
  Cognitive 4.9 0.215
  Passenger Related 0.3 0.058
  In-Vehicle Tasks 1.1 0.103
  Out-Vehicle 0.6 0.079
  Cellphone 0.7 0.081
 Speeding
  Driving Over the Speed Limit 10.8 0.311
Conditional and Environmental Properties
 Passenger
  Presence of Passengers 28.2 0.450
  Driver and Passengers Age: 16–24 4.0 0.196
 Vision condition
  Vision Obscured 2.7 0.163
 Light condition
  Daylight 77.0 0.423
  Dark – Not Lighted 6.2 0.240
  Dark – Lighted 13.5 0.342
  Dawn or Dusk 3.3 0.178
 Weather condition
  Fair/Cloudy Weather 87.1 0.35
  Rainy 8.8 0.283
  Snowy 3.8 0.191
  Sleety or Foggy 0.3 0.054
 Crash Day
  Weekend 22.7 0.419
 Time of Day
  Regular Hour (after morning peak hour and before afternoon peal hour) 52.8 0.499
  Morning Peak Hour 11.7 0.322
  Afternoon Peak Hour 35.5 0.478
Characteristics of the vehicle
 Vehicle Type
  Cars 57.0 0.495
  SUVs 19.2 0.394
  Vans 7.1 0.256
  Pickups 16.8 0.374
 Vehicle Age
  Up to 7 44.4 0.497
  7–12 37.1 0.483
  12 Above 18.5 0.388
Characteristics of the road
 Road alignment
  Steep roads 18.6 0.389
  Curves 20.5 0.404
 Surface condition
  Dry 77.5 0.417
 Junction Type
  Intersections 47.4 0.499
 Speed Limit
  Up to 35 mi/hr 22.8 0.419
  35–50 mi/hr 57.7 0.494
  Above 50 mi/hr 19.6 0.397
 Highway Type
  Interstate Highway 7.4 0.262
 Zone Type
  Urban Zone 48.5 0.500
 Trafficway Description
  One Way 8.9 0.285
  Two Way - Not Physically Divided 33.0 0.470
  Two Way - Divided Highway 58.1 0.493
Characteristics of the crash
 Collision Type
  Run-off road 11 0.393
  Collision with a fixed object 2.3 0.184
  Collision with a pedestrian 5.1 0.290
  Rear-End 37.4 0.494
  Head-On 3.1 0.172
  Angle 31.4 0.491
  Sideswipe crashes in an opposite direction 1.2 0.121
  Sideswipe crashes in the same direction 8.5 0.327