The following standards shall be used to prepare and review any development plan that involves the construction of a new intersection or development of a lot located at an existing intersection:
A. 
Clear sight triangles. All street intersections shall be designed to reserve clear sight triangles including areas both within the public right-of-way and on the tract. Within such areas, no vision-obstructing object with a height between 2 1/2 feet and eight feet above the elevation of the intersecting streets shall be permitted. For the purposes of this article, utility poles, lampposts, shade trees, street name signs and traffic signs shall not be considered vision-obstructing objects. However, shade trees shall be restricted pursuant to § 110-180C within such areas. Clear sight triangles shall be designed in accordance with the following standards:
(1) 
A motor vehicle driver on the minor (controlled) street located 10 feet from the intersecting right-of-way line of the major (uncontrolled) street shall be able to see approaching traffic on the intersecting street as specified below. The minimum required clear sight distance shall be measured along the center line of the uncontrolled or major street based on the posted speed limit of such street as follows:
Posted Speed Limit
(mph)
Minimum Required Clear Sight Distance
(feet)
25
250
30
300
35
350
40
400
45
450
(2) 
An easement controlling structures and landscaping shall be established in a form acceptable to the Board Attorney for all portions of the clear sight triangle not located in a public right-of-way.
B. 
Intersection separation. All intersections shall be separated from adjacent intersections by the minimum distances set forth below. The minimum distance shall be measured from center line to center line along the common intersecting street and shall be dependent upon the type of intersection and the posted speed limit of the roadway between the adjacent intersections. Adjacent "T" intersections with approaches from opposite directions shall be considered full intersections for the purpose of determining a minimum separation distance pursuant to this subsection.
Posted Speed Limit
(mph)
Full Intersection
(feet)
"T" Intersection
(feet)
25
300
200
30
325
225
35
350
250
40
400
275
45
450
300
C. 
Traffic flow lanes. To facilitate traffic flow at major intersections, turning lanes and acceleration and deceleration lanes may be required by the Board.