IDAHO’S "BASIC SPEED" LAW (I.C. §49-654(1))
No person shall drive a vehicle on a highway at a speed greater than is "reasonable and prudent" at all times. This means that you must think about how your speed affects other traffic, including pedestrians and bicyclists. You also need to think about the road surface. With different weather condition like rain and snow, a rough pavement can become slippery depending on the conditions. Other road hazards like the number of intersections, visibility, oncoming traffic, curves, and any other conditions may affect safety. If you are driving too fast for conditions, even if you are driving under the speed limit, you are violating the "basic speed" law.
The driver of every vehicle shall drive at an appropriately reduced speed when:
- Approaching and crossing an intersection or railway grade crossing
- Approaching and going around a curve
- Approaching a hill crest
- Traveling upon any narrow or winding roadway, and
- Any special hazard exists concerning pedestrians or other traffic or because of weather or highway conditions