The number of driveways permitted from any lot to any abutting road shall be in accordance with the following standards, except where conditions of safety of the general motoring public may be impaired:
A. 
Single-family residence zones.
Lot Width
Permitted Number of Driveways
Up to 200 feet
1
200 feet or more
2
Circular driveways containing two driveway openings may be constructed on lots containing a width of 200 feet or more.
B. 
All other zone districts. In determining the number of driveways to be permitted in all other zone districts, the requirements for development set forth in Chapter 550, Zoning, shall be considered as minimum requirements and at the time of site plan review, proposed driveway locations shall be reviewed in accordance with the site plan review standards, taking into consideration, to be applied where appropriate, the county standards for access to county roads.
Exit driveways shall be designed in profile, grading and location to permit the following minimum sight distances measured in each direction along the intersecting roads. Sight distances shall be measured from a point 3 1/2 feet above the center line of the proposed driveway, 10 feet from the edge of the road, to a point 3 1/2 feet above the center line of the approaching lane of the intersecting roadway. There shall be a one-foot sight distance clearance between the measured sight line and the finished grade. All necessary grading and removal of vegetation within the sight triangle shall conform to the following criteria:
Design Speed of Roadway
(mph)
Required Sight Distance
(feet)
20
120
25
150
30
200
35
250
40
325
50
475
All driveways constructed or altered within 50 feet of the center line of the road shall intersect the abutting road at an angle as near to 90° as sight conditions will permit but in no case less than 70°.