With the recent focus on bicycle-vs.-vehicle interactions and Idaho code sections, it is important for bicyclists, automobile drivers and law enforcement to be familiar with the rules of the road. Title 49 contains the rules that apply to vehicles, both motorized and human-powered. In the case of the 14-year-old boy vs. the bus, three conflicting rules apply: 49-714 calls for due caution by cyclists, 49-615 says "not withstanding other rules drivers shall exercise due caution around cyclists," and 49-640 says "entering an uncontrolled intersection vehicles (including bicycles) shall yield to vehicles approaching from the right."
It seems the boy failed to exercise due caution and failed to yield. But it may also be argued that the bus driver violated 49-615. The most important rule for cyclists to obey is the one of common sense—cars are bigger, harder and heavier than we are and you will lose the bike-vs.-vehicle battle.