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.
Traffic Operations. Lane width has an effect on traffic operations and highway capacity, particularly for high-speed roadways. The interaction of lane width with other geometric elements, primarily shoulder width, also affects operations. When determining highway capacity, adjustments are made to reflect the effect of lane width on free-flow speeds. Lane widths of less than 12 feet (3.6 meters) reduce travel speeds on high-speed roadways, as summarized in Tables 4 and 5.