Sec. 4.5. (a) A person operating a vehicle in a funeral procession:
(1) must exercise due caution while in the funeral procession; and
(2) must follow the preceding vehicle in the funeral procession as closely as is practical and safe.
(b) A vehicle that is part of a funeral procession:
(1) must have its headlights and taillights illuminated; and
(2) may display flashing amber lights.
(c) The operator of:
(1) a vehicle immediately following the lead vehicle in a funeral procession; and
(2) the last vehicle in the funeral procession;
may illuminate the vehicle's hazard warning lights while in the funeral procession.