among all collisions in Indiana, failure to ___________ is the most common primary factor. {Ans: yield the right of way}Fuel consumption increases steadily above 45 mph, with passenger cars using _____ percent more fuel traveling at 75 mph than at 55 mph {Ans: 50%}The maximum width of any vehicle that may be operated without a permit is ________ {Ans: 8' 6"}All vehicles over ______ inches in length must have clearance lamps, markers reflectors that make it visible to other motorists in night time {Ans: 80}Some vehicles are required by law to always stop at railroad crossings and must stop between _________ from the tracks. {Ans: 15-50 feet}Seat belts increase the survival of the passenger by ___ percent and cut the risk of serious injury by ____ percent {Ans: 45, 50}young adults aged 16-29 account for _____ % of all fatigue related accidents {Ans: 64}At 55 mph, the average passenger car can make a complete stop in ________ ft, while the average tractor-trailer can make a complete stop in ______ ft {Ans: 140-150, 400}If your vehicle becomes stuck on the railroad tracks but a train is NOT approaching, what is the first thing