Idaho Code § 49-1303: Duty upon striking unattended vehicle.

The driver of any vehicle which collides with any unattended vehicle shall immediately stop, and then and there either locate and notify the operator or owner of the vehicle of the name and address of the driver and owner of the vehicle striking the unattended vehicle, or shall leave in a conspicuous place in or on the vehicle struck a written notice giving the name and address of the driver and of the owner of the vehicle doing the striking, along with a statement of the circumstances.