<Li> An auxiliary lane is a lane other than a through lane, used to separate entering, exiting or turning traffic from the through traffic . </Li> <Dl> <Dd> <Ul> <Li> An acceleration lane or merge lane allows traffic entering a highway to accelerate to the speed of through traffic before merging with it . </Li> <Li> A deceleration lane is a lane adjacent to the primary road or street used to improve traffic safety by allowing drivers to pull out of the through lane and decelerate safely before turning off a surface street or exiting a freeway . </Li> <Li> A turn lane is set aside for slowing down and making a turn, so as not to disrupt traffic . By removing turning traffic from the through lanes, motorist safety is improved and delay is removed, but crossing distances for pedestrians are lengthened, increasing their exposure to collisions . </Li> <Li> A two - way center turn lane is a lane in the center of a roadway to allow drivers traveling in either direction to pause before turning across oncoming traffic (a left turn in right - driving countries, or a right turn in left - driving countries) while waiting for a gap in traffic . </Li> <Li> A passing lane is sometimes provided on busy two - lane roads to allow drivers to pass slower vehicles without having to cross the center line and risking a head - on collision . </Li> <Li> A climbing lane, truck lane, or crawler lane is often provided on steep mountain grades, in order to allow smaller vehicles to pass larger, slower ones . The lane is marked only on the uphill stretch and usually a short distance afterward (for regaining speed). </Li> <Li> An operational lane or auxiliary lane is an extra lane on the entire length of highway between interchanges, giving drivers more time to merge in or out . The lane is created when an entrance ramp meets the highway, and drops out (with an "exit only" sign) to become the ramp at the next exit . </Li> <Li> A transfer lane of a road is used to move from express lanes to collector lanes, or vice versa; it is somewhat similar to an auxiliary lane . </Li> <Li> A collector lane of a road is used for slower moving traffic and has more access to exits / off ramps . </Li> </Ul> </Dd> </Dl> <Dd> <Ul> <Li> An acceleration lane or merge lane allows traffic entering a highway to accelerate to the speed of through traffic before merging with it . </Li> <Li> A deceleration lane is a lane adjacent to the primary road or street used to improve traffic safety by allowing drivers to pull out of the through lane and decelerate safely before turning off a surface street or exiting a freeway . </Li> <Li> A turn lane is set aside for slowing down and making a turn, so as not to disrupt traffic . By removing turning traffic from the through lanes, motorist safety is improved and delay is removed, but crossing distances for pedestrians are lengthened, increasing their exposure to collisions . </Li> <Li> A two - way center turn lane is a lane in the center of a roadway to allow drivers traveling in either direction to pause before turning across oncoming traffic (a left turn in right - driving countries, or a right turn in left - driving countries) while waiting for a gap in traffic . </Li> <Li> A passing lane is sometimes provided on busy two - lane roads to allow drivers to pass slower vehicles without having to cross the center line and risking a head - on collision . </Li> <Li> A climbing lane, truck lane, or crawler lane is often provided on steep mountain grades, in order to allow smaller vehicles to pass larger, slower ones . The lane is marked only on the uphill stretch and usually a short distance afterward (for regaining speed). </Li> <Li> An operational lane or auxiliary lane is an extra lane on the entire length of highway between interchanges, giving drivers more time to merge in or out . The lane is created when an entrance ramp meets the highway, and drops out (with an "exit only" sign) to become the ramp at the next exit . </Li> <Li> A transfer lane of a road is used to move from express lanes to collector lanes, or vice versa; it is somewhat similar to an auxiliary lane . </Li> <Li> A collector lane of a road is used for slower moving traffic and has more access to exits / off ramps . </Li> </Ul> </Dd> <Ul> <Li> An acceleration lane or merge lane allows traffic entering a highway to accelerate to the speed of through traffic before merging with it . </Li> <Li> A deceleration lane is a lane adjacent to the primary road or street used to improve traffic safety by allowing drivers to pull out of the through lane and decelerate safely before turning off a surface street or exiting a freeway . </Li> <Li> A turn lane is set aside for slowing down and making a turn, so as not to disrupt traffic . By removing turning traffic from the through lanes, motorist safety is improved and delay is removed, but crossing distances for pedestrians are lengthened, increasing their exposure to collisions . </Li> <Li> A two - way center turn lane is a lane in the center of a roadway to allow drivers traveling in either direction to pause before turning across oncoming traffic (a left turn in right - driving countries, or a right turn in left - driving countries) while waiting for a gap in traffic . </Li> <Li> A passing lane is sometimes provided on busy two - lane roads to allow drivers to pass slower vehicles without having to cross the center line and risking a head - on collision . </Li> <Li> A climbing lane, truck lane, or crawler lane is often provided on steep mountain grades, in order to allow smaller vehicles to pass larger, slower ones . The lane is marked only on the uphill stretch and usually a short distance afterward (for regaining speed). </Li> <Li> An operational lane or auxiliary lane is an extra lane on the entire length of highway between interchanges, giving drivers more time to merge in or out . The lane is created when an entrance ramp meets the highway, and drops out (with an "exit only" sign) to become the ramp at the next exit . </Li> <Li> A transfer lane of a road is used to move from express lanes to collector lanes, or vice versa; it is somewhat similar to an auxiliary lane . </Li> <Li> A collector lane of a road is used for slower moving traffic and has more access to exits / off ramps . </Li> </Ul>

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