Risk factors Transportation safety in the United States
moose (a. a. gigas) crossing road in alaska
rural non-interstate highways particularly risky. two-lane non-divided highways built lower standards interstate highways. drivers drunk , not wearing seat belts. speeding common. deer, elk , moose crossing highway add risk compared urban highways. in event of accident in remote area, injured victims may not receive emergency medical care in time save lives.
many accidents when driving personal vehicles caused distracted driving. according american automobile association (aaa), distraction plays factor in 60% of moderate serious teen car crashes. specifically, passenger , cell phone interaction accounted 27% of crashes, leading cause. drivers looking away target (roadway) accounted 19%.
non-use of seat belts significant risk factor. according col. tom butler, chief of montana highway patrol, preliminary 2015 data indicated 178 of 224 vehicle occupant fatalities of individuals not wearing seat belts. fine in montana not wearing seat belt in 2015 $20. although speed limits increased 75 mph 80 mph on rural interstates year, biggest statewide increase in both crashes , deaths occurred on secondary roads. forty-three people died on montana two-lane roads outside of towns neither u.s. or state highways.
average trip duration may greater in rural states, may mean driver fatigue more salient risk factor in rural states in more densely populated states. data on number of hours driven in day , accident rates commercial drivers required keep driving logs. (see next section.)
human factor 1 of more significant in various factors leading fatalities.
according fdot:
«when speeding compared fault, drivers traveling @ speed on 4 mph on posted limit highly overrepresented in fault. amount of speeding increases, degree of overrepresentation increases; however, @ 5-9 miles on limit, drivers overrepresented in fault factor of on 2.0. ».
«drinking drivers between 3.5 , 18 times @ fault in crash, depending on amount of alcohol ingested. »
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