All revenues received from the tax are pledged solely for the purpose of funding the initial improvement of main trafficways or intermediate traffic signals in the City of Olathe. At the discretion of the Governing Body, other revenues as may be legally utilized for such purpose may be deposited into the Trafficway Excise Tax account. The City may issue and utilize general obligation bonds or other certificates of indebtedness as are within the authority of the City in such manner and subject to such limitations as may be provided by law in furtherance of the financing and provision of the improvement of main trafficways. Funds pledged toward the retirement of bonds or other certificates of indebtedness may include the Trafficway Excise Tax and other City (and non-City) funds and revenues as may be allocated by the Governing Body. Trafficway Excise Taxes paid pursuant to this Ordinance, however, shall be used solely and exclusively for the initial improvement of main trafficways or intermediate traffic signals as defined herein.