112.14(3) Sight Distance (page 7)
112.2(36) Sight distance. The distance of clear vision along a primary highway in each directionfrom any given point of access where a vehicle must stop before entering the highway.
1. Sight distance at an access location is measured from the driver's height of eye (3.5 feet) to the
height of an approaching vehicle (4.25 feet).
2. An access location should be established where desirable sight distance is available and shall not
be authorized in a location providing less than minimum sight distance, as shown below.
POSTED DAYTIME SPEED LIMIT (mph) |
DESIRABLE SIGHT DISTANCE (feet) |
MINIMUM SIGHT DISTANCE (feet) |
70 |
910 |
730 |
65 |
820 |
645 |
60 |
730 |
570 |
55 |
645 |
495 |
50 |
570 |
425 |
45 |
495 |
360 |
40 |
425 |
305 |
35 |
360 |
250 |
30 |
305 |
200 |
