<Li> Western states began to reduce fines in the 1980s, effectively minimizing the impact of the 55 mph limit: <Ul> <Li> Arizona, Idaho, Montana, Nevada, and Utah replaced traditional speeding fines with $5--$15 energy wasting fines as long as drivers did not exceed the speed limit in effect before the 55 mph federal requirement . <Ul> <Li> Nevada's energy wasting fine was enacted on April 15, 1981, when signed by Governor Robert List . Motorists not exceeding 70 mph (115 km / h) in 55 mph (90 km / h) zones could be issued $5 "energy wasting" fines . However, standard speeding tickets were still allowed and "troopers were directed not to take the new law as a signal to stop writing tickets". </Li> </Ul> </Li> <Li> In 1986, North Dakota's fine for speeding up to 15 mph (25 km / h) over the limit was only $15 and had no license points . </Li> <Li> South Dakota cut speeding fines in 1985 and stopped assessing points for being 10 mph (15 km / h) or less above the speed limit in 1986 . </Li> <Li> On August 1, 1986, Minnesota, which normally suspended licenses after three tickets, stopped counting speeding tickets for no more than 65 mph (105 km / h). </Li> </Ul> </Li> <Ul> <Li> Arizona, Idaho, Montana, Nevada, and Utah replaced traditional speeding fines with $5--$15 energy wasting fines as long as drivers did not exceed the speed limit in effect before the 55 mph federal requirement . <Ul> <Li> Nevada's energy wasting fine was enacted on April 15, 1981, when signed by Governor Robert List . Motorists not exceeding 70 mph (115 km / h) in 55 mph (90 km / h) zones could be issued $5 "energy wasting" fines . However, standard speeding tickets were still allowed and "troopers were directed not to take the new law as a signal to stop writing tickets". </Li> </Ul> </Li> <Li> In 1986, North Dakota's fine for speeding up to 15 mph (25 km / h) over the limit was only $15 and had no license points . </Li> <Li> South Dakota cut speeding fines in 1985 and stopped assessing points for being 10 mph (15 km / h) or less above the speed limit in 1986 . </Li> <Li> On August 1, 1986, Minnesota, which normally suspended licenses after three tickets, stopped counting speeding tickets for no more than 65 mph (105 km / h). </Li> </Ul> <Li> Arizona, Idaho, Montana, Nevada, and Utah replaced traditional speeding fines with $5--$15 energy wasting fines as long as drivers did not exceed the speed limit in effect before the 55 mph federal requirement . <Ul> <Li> Nevada's energy wasting fine was enacted on April 15, 1981, when signed by Governor Robert List . Motorists not exceeding 70 mph (115 km / h) in 55 mph (90 km / h) zones could be issued $5 "energy wasting" fines . However, standard speeding tickets were still allowed and "troopers were directed not to take the new law as a signal to stop writing tickets". </Li> </Ul> </Li> <Ul> <Li> Nevada's energy wasting fine was enacted on April 15, 1981, when signed by Governor Robert List . Motorists not exceeding 70 mph (115 km / h) in 55 mph (90 km / h) zones could be issued $5 "energy wasting" fines . However, standard speeding tickets were still allowed and "troopers were directed not to take the new law as a signal to stop writing tickets". </Li> </Ul>

When did the speed limit change to 70