30 CFR § 57.14103 Operators' stations. (a) If windows are provided on operators' stations of self-propelled
mobile equipment, the windows shall be made of safety glass or material with
equivalent safety characteristics. The windows shall be maintained to provide
visibility for safe operation. (b) If damaged windows obscure visibility necessary for safe
operation, or create a hazard to the equipment operator, the windows shall be
replaced or removed. Damaged windows shall be replaced if absence of a
window would expose the equipment operator to hazardous environmental
conditions which would affect the ability of the equipment operator to
safely operate the equipment. (c) The operators' stations of self-propelled mobile equipment
shall (c)(1) Be free of materials that may create a hazard to
persons by impairing the safe operation of the equipment; and (c)(2) Not be modified, in a manner that obscures visibility
necessary for safe operation.
