Where a motor vehicle is disabled on the highway, the tow car operator shall immediately upon arrival place warning signs upon the highway as prescribed in NRS 484B.747 and:

1.  During darkness, shall, if it is safe to do so, place not less than one red flare, red lantern, warning light or reflector in close proximity to each warning sign.

2.  During daylight, may place a red flare, red lantern, warning light or reflector in close proximity to each warning sign.