Idaho Code § 50-1015

All license fees of every character and all fines and penalties recovered under the provisions of any city ordinance shall be paid into the city treasury for the use and benefit of the general fund, except that the council may transfer and distribute the moneys or revenue, in whole or in part, received and recovered from fines, penalties, forfeitures and costs for enforcing and prosecuting violations of ordinances regulating traffic (pedestrian, motor vehicle or bicycle), including but not limited to parking, moving and nonmoving violations of such traffic regulations to the fund or funds established by ordinance dedicated for the purpose of paying the indebtedness (principal and interest) incurred for the acquisition and construction of off-street parking facilities, including land, buildings, structures, equipment and appurtenances necessary for the parking of motor vehicles. The council may also by ordinance transfer and distribute any portion of said fines, penalties, forfeitures and costs, after deducting that amount required to pay an indebtedness (principal and interest) incurred for acquiring and constructing said off-street parking facilities, for the purpose of maintaining and operating said off-street parking facilities.