61-7-108. Immediate notice of accidents. The driver of a vehicle who knows or reasonably should have known that the driver has been involved in an accident resulting in injury to or death of any person, striking the body of a deceased person, or property damage to an apparent extent of $1,000 or more shall immediately by the quickest means of communication give notice of the accident to the local police department if the accident occurs within a municipality, otherwise to the office of the county sheriff or the nearest office of the highway patrol.
61-7-103. Accidents involving another person or deceased person. The driver of any vehicle who knows or reasonably should have known that the driver has been in an accident with another person or a deceased person shall immediately stop the vehicle at the scene of the accident or as close to the accident as possible but shall then return to and in every event remain at the scene of the accident until the driver has fulfilled the requirements of 61-7-105. Each stop at the scene of the accident must be made without obstructing traffic more than is necessary.
See Montana Code Annotated Part 7. Liability 27-1-701 through 27-1-755.