A. Except as provided in subsection B of this section, if a motor truck, passenger bus, truck tractor, trailer, semitrailer or pole trailer is disabled on the traveled portion of a highway or the shoulder of a highway outside of a city or town at a time when lighted lamps are required on vehicles, the driver of the vehicle shall display the following warning devices on the highway during the time the vehicle is disabled on the highway:

1. 1. A lighted fusee immediately placed on the roadway at the traffic side of the motor vehicle unless electric lanterns are displayed.

2. 2. Within the burning period of the fusee and as promptly as possible, three lighted flares or pot torches or three electric lanterns placed on the roadway as follows:

   1. (a) One at a distance of approximately one hundred feet in advance of the vehicle and one at a distance of approximately one hundred feet to the rear of the vehicle, each in the center of the lane of traffic occupied by the disabled vehicle.
   2. (b) One at the traffic side of the vehicle approximately ten feet rearward or forward of the vehicle.

B. If a vehicle that is used in transporting flammable liquids in bulk or compressed flammable gases is disabled on a highway at a time or place provided in subsection A of this section, the driver of the vehicle shall display on the roadway the following lighted warning devices:

1. 1. One red electric lantern immediately placed on the roadway at the traffic side of the vehicle.
2. 2. Two other red electric lanterns placed to the front and rear of the vehicle in the same manner prescribed for flares in subsection A of this section.

E. A person is in compliance with this section if three portable reflector units are both:

1. 1. Displayed at the times and under the conditions provided in this section either during the daytime or at nighttime.
2. 2. Placed on the roadway in the locations prescribed by this section for the placing of electric lanterns and lighted flares.