Where the only remedy to an arterial unit in arrears is the installation of a traffic signal, but signalization warrants contained in the current edition of the Manual on Uniform Traffic Control Devices (MUTCD) are not met at present, developments impacting the arterial unit may be allowed to proceed without the installation of the traffic signal; provided that all other warranted level-of-service and transit related improvements are made on the arterial unit within the deficient level-of-service. Developments impacting such arterial units will not be issued building permits or occupancies (whichever comes first) until the improvements (not including the traffic signal) to the level-of-service deficient arterial unit are under contract or being performed. Such developments will be subject to all other obligations as specified in this Chapter.