Before any zoning certificate is issued affecting any land within 300 feet of the centerline of a proposed new highway or a highway for which changes are proposed as described in the certificate to local officials by the Director of Transportation, or any land within a radius of 300 feet from the point of intersection of said centerline with any public road or highway, the Zoning Inspector shall give notice, by registered mail, to the Director of Transportation that he shall not issue a zoning permit for thirty (30) days from the date the notice is received by the Director of Transportation. If the Director of Transportation notifies the Zoning Inspector that he shall proceed to acquire the land needed, then the Zoning Inspector shall refuse to issue the zoning permit. If the Director of Transportation notifies the Zoning Inspector that acquisition at this time is not in the public interest, or upon the expiration of the thirty (30) day period or of any extension thereof agreed upon by the Director of Transportation and the property owner, the Zoning Inspector shall, if the application is in conformance with all provisions of this Zoning Ordinance, issue the zoning permit.