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.
OED Online includes more than 21,800 entries for which the first evidence of use is dated 1500-1575; a further 44,500 were added between 1576 and 1650. The considerable number of words traced to the period 1550-1650 is seen in this timeline which charts how new words were added to the English language from the eleventh century. of these new words, 1250 may be classified as slang or canting terms, among them cove, clapperdudgeon, romboyle, and to fizzle.