Section 5: Driveway Angle Two-way driveways should intersect the
roadway at an angle of ninety degrees unless it is determined
that a lesser angle will provide satisfactory traffic operations
for the highway. Suggested limiting values on driveway angles
are: Residential Driveway: 75o Commercial Driveway: 75o;
commercial driveways expected to have a volume of 400 vehicles
per day or two or more trucks/large vehicles in a one-hour
period shall be designed as normal intersections (public
driveway). Normal Intersection (Public Driveway), Service
Driveway and Field Driveway: 80o. The angle of intersection
between the centerline of a one-way driveway and the edge of
pavement of the public roadway may be between forty-five (45o)
and ninety degrees (90o). Sixty degrees (60o) is a commonly used
angle for one-way driveways.