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cloverleaf
Interchange with four branches where the inside loops are for turning left and the direct links for turning right.
passing lane
Far left traffic lane where faster-moving vehicles pass other traffic.
traffic lane
Part of the roadway demarcated by lines, each accommodating a single line of vehicles.
slower traffic
Far right traffic lane for slower-moving vehicles.
entrance
Start of the acceleration lane, parallel to the traffic lanes.
freeway
Large thoroughfare with separate one-way lanes and no crossing streets; reserved for high-speed traffic.
overpass
Raised part of a road or highway on which traffic flows over another highway or obstacle.
loop
Wide circular curve for moving from one highway to another in order to change direction.
ramp
Connecting lane between two highways or between a road and a highway for changing direction.
highway
Communications route connecting two distant geographic points, usually urban centers.
exit
Start of the ramp for vehicles leaving the freeway.
broken line
Line demarcating the two lanes of the roadway and showing that passing is permitted.
deceleration lane
Temporary lane where vehicles slow down after leaving the traffic lanes.
side lane
Temporary lane for vehicles intending to enter or exit the main lanes.
island
Groomed land between the various lanes of an interchange.
traffic lanes
Parts of the roadway demarcated by lines, each accommodating a single line of vehicles.
transfer ramp
End of the ramp where it meets the highway entrance.
acceleration lane
Temporary lane where vehicles entering the freeway gain speed in order to safely merge into the traffic lane.