Along the frontage of every lot, except for areas devoted to accessways, landscaping shall be provided as described in §§ 215-49 to 215-58, Landscape Regulations, of the Subdivision and Land Development Ordinance (Chapter 215). The landscaped areas shall extend toward the interior of the lot for a minimum distance of 10 feet from the ultimate right-of-way line. Additionally, landscaping between the ultimate right-of-way and the curbline or edge of the roadway shoulder shall be encouraged, recognizing that such landscaping may have to be removed in the future for roadway improvements; landscaping in this area would therefore be encouraged to represent a low financial investment and/or be capable of relocation. In all instances, landscaping shall be so installed that clear sight triangles are provided.