The superintendent or manager of any transportation company subject to supervision under this chapter shall notify the Agency by telephone or wire and subsequently in writing of any accident within this State, immediately after its occurrence, which results in loss of life or injury to any person which shall incapacitate him or her from engaging in his or her usual vocations. The Agency shall inquire into the cause of every accident about which it is notified, and if, in its judgment, a public investigation is necessary, it shall fix a time and place for holding an investigation, and shall proceed as provided in provisions of law relating to investigation of accidents upon railroads. (Added 1985, No. 224 (Adj. Sess.), § 1.)