An Open Access Journal
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 |