Statute. An act of a legislature that declares, proscribes, or commands something; a specific law, expressed in writing. A statute is a written law passed by a legislature on the state or federal level.Statutes set forth general propositions of law that courts apply to specific situations. statute begins as a bill proposed or sponsored by a legislator. If the bill survives the legislative committee process and is approved by both houses of the legislature, the bill becomes law when it is signed by the executive officer (the president on the federal level or the governor on the state level).
The average width of a car lane is 9 feet which is equivalent to  2.7 meters. However, this may vary in some cases like highways  which are 3.7 meters or 12 feet wide.
Flexibility is also evident for lower-class roads and streets, with recommended narrower lane widths consistent with lower design speeds on such roads. The discussion of lane width in the AASHTO Green Book (2) for urban areas also reflects a high degree of flexibility. It is noted that lane widths may vary from 10 to 12 ft (3.0 to 3.6 m) for arterials..