Section Trans 300.55 - Mirrors(1) School bus mirrors shall comply with the requirements in 49 CFR 571.111 and FMVSS 111. In addition, type A-I, B, C or D buses shall comply with the following: (a) There shall be one interior rearview mirror of at least 6 by 30 inches. The mirror shall be so constructed that the corners are rounded and the edges are smooth or protected.(b) An optional convex mirror may be mounted on the inside rear of the school bus.(c) There shall be 2 outside rearview mirrors, one to the right and one to the left of the driver. Each mirror shall have not less than 50 square inches of unobstructed reflective surface and shall be firmly supported and adjustable to give the driver a clear view past both the right and left rear of the bus.(d) There shall be an adjustable convex mirror or equivalent "banana type mirror" mounted on the right side to provide an additional close-in field of vision from the front of the bus rearward. This mirror may be mounted on the bracket required for the cross view mirror. The mirror required in this paragraph shall be independently adjustable. It shall have at least a 7 inch diameter face.(2) Type A-II buses shall have an interior and 2 exterior rearview mirrors, one on the right and one on the left side of the bus capable of reflecting a view past the rear of the bus. Mirrors may not have sharp corners or edges.(3) All buses shall be equipped with 2, 7-inch diameter convex mirrors or an equivalent "banana type mirror" which shall be mounted on the right and left sides in such a manner that the driver may observe a reflection of the road from beneath the front bumper forward to a point where direct observation is possible through each mirror.(4) Each mirror required in this section may not be broken, cracked or discolored.Wis. Admin. Code Department of Transportation Trans 300.55
Cr. Register, February, 1983, No. 326, eff. 3-1-83; am. (1) (intro.), (3), renum. (1) (b) and (c) to be (1) (c) and (d) and am., Cr. (1) (b), Register, February 1995, No. 470, eff. 3-1-95; am. (1) (intro.), (2) and (4), Register, December, 1997, No. 504, eff. 1-1-98.