A lane mile is a mile of roadway in a single driving lane. The total lane mileage of a highway is found by multiplying the centerline mileage of a road by the number of lanes it has. Lane mileage is the total amount of mileage covered by a road’s lanes.
A. 2 lanes x 0.5 mile = 1 lane mile
B. 4 lanes x 0.5 mile = 2 lane miles