The O-T Office/Transitional District is intended to provide land and structures used primarily to provide office space. Some residential-type structures, for both permanent and transient occupancy and including institutions, are permitted. Limited commercial uses, which conform to the pattern of the district, are also permitted. The uses permitted are characterized by a low volume of traffic and limited outdoor advertising, so as to protect the abutting and surrounding residential districts. This district is normally small in size and is often located as a buffer between residential and commercial areas.