A police chief of a local law enforcement agency with the approval of the local governing authority shall be authorized to designate and equip police volunteers and to provide training to such police volunteers in the area and manner of traffic control. With the approval of the police chief of a local law enforcement agency or fire chief of a local fire department, a police volunteer shall be authorized to direct and regulate the flow of traffic in the event of a fire, explosion, hurricane, tornado, or other emergency situation. A police volunteer shall not have the power of arrest provided to peace officers.