The minimum and usual mainlane width is 12 ft [3.6 m]. The number of lanes required to accommodate the anticipated traffic in the design year is determined by the level of service evaluation as discussed in the Highway Capacity Manual.
Adj. groovy is 1853 in lit. sense of of a groove; 1937 in slang sense of excellent, from jazz slang phrase in the groove (1932) performing well (without grandstanding).. As teen slang for wonderful, it dates from 1944; popularized 1960s, out of currency by 1980.
In the 1920âs, gravy was a slang word for easy money usually gotten by illegal means. Gravy is a rich food and sometimes used to describe luxuries. To have it easy by making a living with little effort. During Americaâs railroad days, the gravy train evolved when a âgravyâ run was an easy one with little work.