The flow of traffic through intersections is regulated by traffic
lights. The most common type of light will have a red light on
top, yellow light in the middle and green light at the
- A red light means stop. You must come to a complete stop
before the stop line, crosswalk or intersection. When the light
changes to green and the intersection is clear then you can
proceed. If the red light is flashing, you still must come to a
complete stop. In this case, yield to the cross traffic or
pedestrians and then proceed. If there is a red arrow then it
means that you cannot turn in the direction of the arrow.
- A yellow light means caution. This light cautions you that the
signal is about to turn red and you will need to stop. If you are
already in the intersection then proceed through. If you have not
entered the intersection yet then you should come to a safe stop.
You should never speed up to ‘beat the light’. This is how many
accidents occur. If the light is flashing yellow then you should
slow down and look carefully for hazards and proceed if it is
- A green light means go. You can proceed if the light is
green. Always proceed through an intersection with caution
because other motorists or pedestrians may not be looking at the
light. If there is a green arrow then you can proceed in the
direction the arrow is pointing. When the arrow is lit, the
oncoming traffic is required to stop.
The state of Idaho has implemented new types of traffic signals
called “Dog House” Signals to improve the traffic flow at major
intersections. The “Dog House” signal is added to the regular
traffic light and displays 5 lights instead of 3. The additional
lights are a yellow and green arrow to indicate a left turn. The
newest style of “Dog House” signals contains an additional yellow arrow
instead of the green ball in the lower right side of the signal.
This indicates that the driver must yield to oncoming traffic and
pedestrians before turning. The purpose of the signals is to
allow more vehicles to make left turns at intersections and keep the
traffic moving. If a traffic signal is not functioning, the
intersection should be treated as a four-way stop.