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Table 1 Frequency distribution of driving errors involved in 5856 fatal 2-vehicle crashes by marijuana positivity status, Fatality Analysis Reporting System, 2011–2016

From: Direct and indirect effects of marijuana use on the risk of fatal 2-vehicle crash initiation

Type of driving error Positive for marijuana
No. (%)
Negative for marijuana
No. (%)
Total
No. (%)
Failure to keep in proper lane 322 (22.6) 1577 (25.3) 1899 (24.8)
Failure to yield right of way 148 (10.4) 1299 (20.8) 1447 (18.9)
Driving too fast for conditions or in excess of posted maximum 320 (22.4) 1037 (16.6) 1357 (17.7)
Failure to obey actual traffic signs, traffic control devices, or traffic officers 150 (10.5) 684 (11.0) 834 (10.9)
Operating the vehicle in an erratic, reckless, careless, or negligent manner or at erratic or suddenly changing speeds 110 (7.7) 339 (5.4) 449 (5.9)
Driving on wrong side of the road 107 (7.5) 541 (8.7) 648 (8.4)
Manslaughter or homicide or other assault 93 (6.5) 313 (5.0) 406 (5.3)
Making an improper turn 24 (1.7) 132 (2.1) 156 (2.0)
Passing with insufficient distance or inadequate visibility or failing to yield to overtaking vehicle 31 (2.2) 94 (1.5) 125 (1.6)
Passing where prohibited 60 (4.2) 16 (0.3) 76 (1.0)
Any other 62 (4.3) 211 (3.4) 273 (3.6)
Totala 1427 (100.0) 6243 (100.0) 7670 (100.0)
  1. aTotal exceeds the number of crashes because more than 1 error could be recorded in each crash
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