divided highway) between Las Cruces and Alamogordo is one of only two sections of non-Interstate route as well as being the first road in New Mexico that's not a freeway to have the 75 mph limit; as of January 2019, US 285 between Roswell and Vaughn was raised to 75 mph as well. New Mexico, Nevada (US 95 south of US 93), and Texas are the only three states with 75 mph limits on roads that aren't freeways. There is no statutory requirement for reduced speeds on urban freeways so that, for example at Santa Fe and Las Vegas the speed limit remains 75 mph on I-25. New Mexico, Kansas, North Dakota, Colorado, and Texas are the only states to have a speed limit greater than 70 mph in urban highways. Nonetheless, there are 65 mph limits on freeways in more heavily urbanized areas such as Albuquerque and Las Cruces. Other reduced speed limits do exist, but the lowest speed limit under normal conditions on New Mexico's freeways is 55 mph, which can be found on two sections of Interstate 25: The first section being three miles from the Big I to Gibson Boulevard in Albuquerque, and the second being a short stretch near Raton Pass. These particular stretches of I-25 were originally built as relocations of US-85, whose design and construction predate the interstate highway era. As such, these stretches do not meet modern interstate highway standards, and have closely spaced interchanges, sharp curves, and/or limited sight distances. By statute, other state maintained roads may have speed limits of up to 75 mph. Four-lane divided highways in open areas often have 65 mph limits, with some 70 mph limits, such as almost the entire length of US 550 from Bloomfield to Bernalillo, and a 23-mile stretch of US 70 west of Roswell. Primary two-lane highways in open areas with parking shoulders often have 65 mph limits. Most primary two-lane highways without parking shoulders in open and mixed rural areas still have a 55 mph limit, but some have 60 mph limits. A 65 mph left lane minimum speed limit is sometimes indicated on 75 mph roads with steep grades, "slower traffic keep right" is also in effect. On one-way roadways state law reserves the left and center lanes of two or more lanes for passing. There are reduced advisory speed limits for some roads during poor weather. Speeding fines