§ 31-12-101 — Metal tires with projections

(a) Motor vehicles, trailers and all other vehicles,
contrivances or devices having metal tires shall not be operated
over any of the oil, asphalt or concrete surfaced highways of
the state, if the vehicle has on the periphery of any of the
road wheels, any lug, flange, cleat, ridge, bolt or any
projection of metal or wood which projects radially beyond the
tread or traffic surface of the tire, unless the highway is
protected by putting down solid planks or other suitable
material, or by attachments to the wheels so as to prevent the
vehicles from damaging the highway except:
(i) This prohibition does not apply to tractors
equipped with what is known as caterpillar treads, when the
caterpillar does not contain any projection of any kind likely
to injure the surface of the road;
(ii) It is permissible to move farm machinery other
than tractors having protuberances that will not injure the
highways;
(iii) It is permissible to use tire chains of
reasonable proportions upon any vehicle when required because of
snow, ice or other conditions tending to cause the vehicle to
slide or skid.