The Idaho Supreme Court has a fixed penalty for speeding.
- $47 - 1 to 20mph over the posted limit
- $102 – greater than 20mph over the speed limit
When a driver exceeds the limit in a construction zone, an additional
$50 will be added to the fine. If an infraction occurs in a school
zone, there is a minimum fine of $75 plus $41.50 in associated court