(A) All driveways for residential uses shall be designed and located so that the minimum sight distances are provided. The sight distance for speeds not located on the table below should be computed by dividing the speed limit by five and multiplying that number by 35 feet [(speed limit/5) 35].
(B) All driveways for commercial uses shall be designed and located so that the minimum sight distances are provided. The sight distance for speeds not located on the chart should be computed by dividing the speed limit by five and multiplying that number by 50 feet [(speed limit/5) 50].
(C) All street intersections shall be designed and located so that the minimum sight distances as shown in the table below are provided. The sight distance for speeds not located on the chart should be determined by referencing Intersection Safety: A Manual for Local Rural Road Owners, as prepared and distributed by the U.S. Department of Transportation, Federal Highway Administration.
Minimum Sight Distance Requirements
Operating Speed | 25 | 30 | 35 | 40 | 45 | 50 | 55 | 60 | 65 |
New Residential Driveway Access | 175 | 210 | 245 | 280 | 315 | 350 | 385 | 420 | 455 |
New Commercial Driveway Access | 250 | 300 | 350 | 400 | 450 | 500 | 550 | 600 | 650 |
New Street Intersection | 280 | 335 | 390 | 445 | 500 | 555 | 610 | 665 | 720 |
(D) All driveways and street intersections proposed to access state roads require an access permit from the Indiana Department of Transportation (INDOT).
(E) Any road or street that does not have a posted speed limit should refer to the Dearborn County, Indiana Code of Ordinances for its appropriate speed. The sight distances shall be applied as demonstrated.
(F) The Technical Review Committee can grant a 20% reduction of the required sight distance for proposed driveway accesses in certain situations, such as where the street is: minimally traveled, located on a dead-end street, contains little or no development, or is a gravel road.
(Ord. 2019-010, passed 5-13-19)