Some road type classifications are influenced by city size, traffic density, and regional conventions. For example, in a very large city a primary street may have three or more lanes in each direction on a divided road. While in a town of dirt roads, the only paved single lane street could be a primary street.
subset - a set whose members are members of another set; a set contained within another set. set - (mathematics) an abstract collection of numbers or symbols; the set of prime numbers is infinite. Translations. podmnoÅ¾ina.
subgroup - (mathematics) a subset (that is not empty) of a mathematical group. math, mathematics, maths - a science (or group of related sciences) dealing with the logic of quantity and shape and arrangement. mathematical group, group - a set that is closed, associative, has an identity element and every element has an inverse. Translations. subgrupo