<Li> A high occupancy vehicle or carpool lane is reserved for carpooling . In the US, they may be marked with a diamond icon every few hundred feet (hence the nickname "diamond lane"), or separated from other lanes by double broken white lines, a continuous pair of double yellow lines, or just a single broken white line . </Li> <Li> A high - occupancy toll lane is a combination of an HOV lane and toll collection technology that allows drivers without passengers to use the HOV lane by paying a premium price for the privilege </Li> <Li> A designated bicycle lane is a portion of the roadway or shoulder designated for the exclusive or preferential use of bicyclists . This designation is indicated by special word and / or symbol markings on the pavement and "BIKE LANE" signs . </Li> <Li> A motorcycle lane is provided at certain roads and highways such as the Federal Highway in Malaysia to segregate the motorcycle traffic from the main roadways to reduce motorcycle - related accidents . The motorcycle lane may form a part of the hard shoulder, or may be one or more completely separated lanes . </Li>

Width of a 4 lane road in india