31-5-923. Vehicular traffic hazard lamps. (a) Any vehicle including those referred to in W.S. 31-5-901(c) may be equipped with lamps for the purpose of warning the operators of other vehicles of the presence of a vehicular traffic hazard requiring the exercise of unusual care in approaching, overtaking or passing. (b) After January 1, 1986, every bus, truck, truck tractor, trailer, semitrailer or pole trailer eighty (80) inches or more in over-all width or thirty (30) feet or more in over-all length shall be equipped with lamps complying with the regulations of the superintendent. (c) Lamps allowed by this section shall comply with the regulations of the superintendent.
Wyoming Legal Code