**In Wyoming the highest speed limit is 80 mph (129 km/h), found on Interstate highways, and 70 mph (113 km/h) on four-lane divided highways. The speed limit for school zones is 20 mph (32 km/h), 30 mph (48 km/h) in urban districts and residential areas, 70 mph (113 km/h) for other paved roads, and 55 mph (89 km/h) for unpaved roads.**

The speed limit on WY 120 (two-lane highway) from the Chief Joseph Highway to the Montana border is 70 mph (113 km/h). Two other two-lane highway sections, WYO 130 from Interstate 80 south to Saratoga and US 85 from east of I-25 to Newcastle, are posted at 70 mph (113 km/h).