| 4.__Multilane highway.__On a highway with more than 2 lanes |
in the same direction, a commercial motor vehicle is |
restricted in ordinary operation to the right-hand lane and in |
overtaking and passing is restricted to the next adjacent |
travel lane and may not use any other lanes except in an |
emergency.__For purposes of this section, "commercial motor |
vehicle" means a vehicle in excess of 2 1/2 tons used for |
transportation of goods, wares and merchandise. |