Section 215.305 - Stenciling of maintenance-of-way equipment(a) Maintenance-of-way equipment (including self-propelled maintenance-of-way equipment) described in § 215.3(c)(3) shall be stenciled, or marked-(1) In clearly legible letters; and(2) In accordance with paragraph (b) of this section.(b) The letters "MW" must be-(1) At least 2 inches high; and(2) Placed on each side of the car.44 FR 77340, Dec. 31, 1979, as amended at 45 FR 26711, Apr. 21, 1980