College facilities shall not be used for commercial solicitations, advertising, or promotional activities except when such activities clearly serve the district's educational objectives including, but not limited to, display of books of interest to the academic community or the display or demonstration of technical or research equipment, and when such commercial activities relate to educational objectives and are conducted under the sponsorship or the request of a college department or the office of student life, provided that such solicitation does not interfere with or operate to the detriment of the conduct of college affairs or the free flow of pedestrian or vehicular traffic. For the purposes of regulation, the term "commercial activities" does not include handbills, leaflets, newspapers, and similarly related materials as regulated in chapters 132P-136 and 132P-142 WAC.