the 70 mph limit came in in 1965.
when did the 70 mph limit come in?
1965
Na
Na
in 2003, the oregon state legislature passed a bill that would have raised the maximum permissible speed limit on interstate highways to 70 mph for cars with a 5 mph differential for trucks, up from the previous 65 mph limit for cars with a 10 mph differential; this bill was signed into law by then newly elected governor ted kulongoski on september 26, 2003. although odot's 2004 study revealed that it is safe for cars to be traveling at 70 mph and trucks at 60 mph the oregon department of transportation decided to not initially implement the increase out of concerns that it would not be safe to have trucks traveling at 65 mph. prior to the national maximum speed law, the speed limit on oregon freeways was 75 mph with some 70 limits on two-lane roads in eastern portions of the state. on july 20, 2015, governor brown signed hb 3402 into law. this bill raises the speed limit on i-84 east of the dalles, i-82 (hb 4047 signed 2/23/16) and us 95 to 70 mph for cars and 65 mph for trucks. it also increases speed limits on several other two lane rural highways to 65 mph for cars and 60 mph for trucks in eastern oregon. the law took effect on march 1, 2016.
speed limits in the united states by jurisdiction