Every law enforcement officer, who in the regular course of duty investigates a motor vehicle crash required to be reported as provided in section 39-08-09 either at the time and at the scene of the crash or thereafter by interviewing the participants, or witnesses, shall make and promptly forward to the director a report of the crash in the format prescribed by the director. The report must contain all the information required therein unless the information is not available, and must be transmitted electronically to the department of transportation using the software prescribed by the director.