The Manual on Uniform Traffic Control Devices (MUTCD) is approved by the Federal Highway Administrator. as the National Standard in accordance with Title 23 U.S. Code, Sections 109(d), 114(a), 217, 315, and 402(a), 23 CFR 655, and 49 CFR 1.48(b)(8), 1.48(b)(33), and 1.48(c)(2).
The dominant vegetation types are grassy prairie and grass steppe in which numerous species of the grass genus Stipa are particularly conspicuous. Pampas grass (Cortaderia selloana) is an iconic species of the Pampas. Vegetation typically includes perennial grasses and herbs.
The Pampas of South America are a grassland biome. They are flat, fertile plains that covers an area of 300,000 sq. miles or 777,000 square kilometers, from the Atlantic Ocean to the Andes Mountains. It is found primarily in Argentina and extends into Uruguay. The word Pampas comes from the Guarani Indian word for level plain.