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2. Interstate Highway standards - Wikipedia

   en.wikipedia.org/wiki/Interstate_Highway_standards

   Minimum lane width: The minimum lane width is 12 feet (3.7 m), identical to most US and state highways. Shoulder width: The minimum width of the left paved shoulder is 4 feet (1.2 m), and of the right paved shoulder 10 feet (3.0 m). With three or more lanes in each direction, both shoulders are to be at least 10 feet (3.0 m) wide.

3. Tire code - Wikipedia

   en.wikipedia.org/wiki/Tire_code

   Prior to 1964, tires were all made to a 90% aspect ratio. Tire size was specified as the tire width in inches and the diameter in inches – for example, 6.50-15. [24] From 1965 to the early 1970s, tires were made to an 80% aspect ratio. Tire size was again specified by width in inches and diameter in inches.

4. Wheel sizing - Wikipedia

   en.wikipedia.org/wiki/Wheel_sizing

   Modern road tires have several measurements associated with their size as specified by tire codes like 225/70R14. The first number in the code (e.g., "225") represents the nominal tire width in millimeters. This is followed by the aspect ratio (e.g.,"70"), which is the height of the sidewall expressed as a percentage of the nominal tire width.

5. Road signs in the United States - Wikipedia

   en.wikipedia.org/wiki/Road_signs_in_the_United...

   The 11th edition of the MUTCD was released on December 19, 2023. [1] The effective date, 30 days after publication, of the MUTCD was January 18, 2024.

6. Interstate Highway System - Wikipedia

   en.wikipedia.org/wiki/Interstate_Highway_System

   The Pershing Map FDR's hand-drawn map from 1938. The United States government's efforts to construct a national network of highways began on an ad hoc basis with the passage of the Federal Aid Road Act of 1916, which provided $75 million over a five-year period for matching funds to the states for the construction and improvement of highways. [8]

7. AOL

   search.aol.com

   The search engine that helps you find exactly what you're looking for. Find the most relevant information, video, images, and answers from all across the Web.