Each lot or parcel of land in the SC3 zone shall abut on a public street for a minimum distance of five hundred (500) feet on a line parallel to the centerline of said street; however, lots or parcels with lesser frontage, or no frontage on a public street, may be created as part of an approved and recorded Record of Survey which conforms to provisions specified in Section 14.20.025, Provo City Code. A portion of the lot frontage may be along the circumference of a cul-de-sac improved to City standards; however, the primary access to a regional shopping center shall not be provided from a cul-de-sac street.