B. Except as provided in subsections C and D of this section or except if a special hazard requires a lesser speed, any speed in excess of the following speeds is prima facie evidence that the speed is too great and therefore unreasonable:

1. 1. Fifteen miles per hour approaching a school crossing.
2. 2. Twenty-five miles per hour in a business or residential district.
3. 3. Sixty-five miles per hour in other locations.

D. The maximum speed provided in this section is reduced to the speed that is reasonable and prudent under the conditions and with regard to the actual and potential hazards then existing, including the following conditions:

1. 1. Approaching and crossing an intersection or railroad crossing.
2. 2. Approaching and going around a curve.
3. 3. Approaching a hillcrest.
4. 4. Traveling on a narrow or winding roadway.
5. 5. A special hazard exists with respect to pedestrians or other traffic or by reason of weather or highway conditions.