Section 92(10)(a) and (b) grants federal jurisdiction over modes of interprovincial and international transportation and communication, leaving intraprovincial transportation and communication to the provinces. The legal interpretation ejusdem generis limits the scope of the exceptions to subsection 92(10). The declaratory power conferred to the federal parliament under 92(10) c) however, applies to works of all types. The Parliament of Canada exercises authority over these three matters under section 91(29), which states:
