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. School speed limits In 2004, a law was passed revising Oregon's school speed limit laws. In school zones, on roads with speed limits of 30 mph or below, drivers were required to slow to 20 mph 24 hours a day, 365 days a year, regardless of whether or not children were present. This replaced most 'when children are present' placards. If the speed limit was 35 mph or higher, the school zone limit would be imposed either by flashing yellow lights or a placard denoting times and days of the week when the limit was in effect. The at-all-times rule was highly unpopular with motorists and was widely ignored. In 2006, the law was revised again, taking away the 'at all times' requirement and replacing it with a time-of-day system (usually school days, 7 a.m. to 5 pm). School crossings with flashing yellow lights remain. In many communities, school zones are strictly enforced and speed traps in these areas are commonly employed. ODOT has not chosen a variation of speed between two-lane roads in Oregon, regardless of the terrain. Any rural two-lane road in the state has a default speed limit of 55 mph. Town speed limits are 20 mph in an alley, 20 mph in a school zone, 35 mph on boulevards, and 45 mph on roads with traffic lights. Pennsylvania In Pennsylvania the maximum freeway speed limit is generally , with select sections of rural freeway and most of the Pennsylvania Turnpike signed at , or such as most of standalone Interstate 70. The speed limit on urban freeways ranges from a low of 40 mph in downtown Pittsburgh and Philadelphia