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Texas state highways are a network of highways owned and maintained by the U.S. state of Texas. The Texas Department of Transportation (TxDOT) is the state agency responsible for the day-to-day operations and maintenance of the system. Texas has the largest state highway system, followed closely by North Carolina's state highway system.
The Urban Dynamometer Driving Schedule is a mandated dynamometer test on tailpipe emissions of a car that represents city driving conditions. It is defined in 40 CFR 86.I . [ 2 ] [ 3 ]
U.S. Route 84 (US 84) is a U.S. highway that runs from Pagosa Springs, CO to Midway, GA. In Texas, the highway enters the state from New Mexico at Farwell, near the Panhandle region. Major cities along the highway include Lubbock, Abilene, Waco and Palestine. The highway exits Texas into Louisiana near Joaquin, crossing the Toledo Bend Reservoir.
SH 158 has one business route. Business State Highway 158-B (formerly Loop 546) is a business loop that runs on the former routing of SH 158 through Midland. The route was created in 1984 as Loop 546 when SH 158 was rerouted around town on top of Loop 250 and SH 349/I-20. Loop 546 was re-designated as Business SH 158-B on June 21, 1990.
In the past, both highways remained on the border past I-30 as State Line Avenue to downtown Texarkana; today, only US 71 does so. Nearly 90 percent of this route is designated to become part of I-69 in the future. Currently 75-mile-per-hour (121 km/h) speed limits are allowed on US 59 in Duval County and portions of northern Polk County.
U.S. Route 290 (US 290) is an east–west U.S. Highway located entirely within the state of Texas. Its western terminus is at Interstate 10 southeast of Segovia , and its eastern terminus is at Interstate 610 in northwest Houston . [ 1 ]
On February 28, 2013, the Texas Transportation Commission voted to transfer ownership and maintenance of Loop 49 from TxDOT to the NET RMA. [15] Segment 4, also known as the Lindale Relief Route, stretches for 6.7 miles (10.8 km) from US 69 south to I-20, bypassing the city of Lindale to the west. The environmental coordination stage of ...
U.S. Route 90 (US 90) is a major east–west highway in the U.S. state of Texas with large portions of it running concurrently with I-10. US 90 begins at Bus. I-10 in Van Horn , travels through San Antonio and Houston , and continues on into the state of Louisiana .