Utah Code § 41-6a-711: Following another vehicle -- Safe distance -- Exceptions -- Penalty.

(1) As used in this section, "connected platooning system" means a system that uses vehicle-to-vehicle communication to electronically coordinate the speed and braking of a lead vehicle with the speed and braking of one or more following vehicles.

(2) The operator of a vehicle:

(a) may not follow another vehicle more closely than is reasonable and prudent, having regard for the:

(i) speed of the vehicles;

(ii) traffic upon the highway; and

(iii) condition of the highway; and

(b) shall follow at a distance so that at least two seconds elapse before reaching the location of the vehicle directly in front of the operator's vehicle.

(3) Subsection (2)(b) does not apply to:

(a) funeral processions or to congested traffic conditions resulting in prevailing vehicle speeds of less than 35 miles per hour; or

(b) the operator of a vehicle that is:

(i) part of a connected platooning system; and

(ii) not the lead vehicle.

(4) A violation of Subsection (2) is an infraction.