Originally Posted by Idaho law

MOTOR VEHICLES
CHAPTER 7
PEDESTRIANS AND BICYCLES
49-720. STOPPING -- TURN AND STOP SIGNALS. (1) A person operating a
bicycle or human-powered vehicle approaching a stop sign shall slow down and,
if required for safety, stop before entering the intersection. After slowing
to a reasonable speed or stopping, the person shall yield the right-of-way to
any vehicle in the intersection or approaching on another highway so closely
as to constitute an immediate hazard during the time the person is moving
across or within the intersection or junction of highways, except that a
person after slowing to a reasonable speed and yielding the right-of-way if
required, may cautiously make a turn or proceed through the intersection
without stopping.
(2) A person operating a bicycle or human-powered vehicle approaching a
steady red traffic control light shall stop before entering the intersection
and shall yield to all other traffic. Once the person has yielded, he may
proceed through the steady red light with caution. Provided however, that a
person after slowing to a reasonable speed and yielding the right-of-way if
required, may cautiously make a right-hand turn. A left-hand turn onto a
one-way highway may be made on a red light after stopping and yielding to
other traffic.
(3) A person riding a bicycle shall comply with the provisions of section
49-643, Idaho Code.
(4) A signal of intention to turn right or left shall be given during not
less than the last one hundred (100) feet traveled by the bicycle before
turning, provided that a signal by hand and arm need not be given if the hand
is needed in the control or operation of the bicycle.