No person shall turn a vehicle at an intersection unless the vehicle is in proper position upon the roadway as required in § 31-16-2 and § 31-16-3, or turn a vehicle to enter a private road or driveway, or otherwise turn a vehicle from a direct course or move right or left upon a roadway, unless and until the movement can be made with reasonable safety. No person shall so turn any vehicle without giving an appropriate signal in the manner described in this chapter in the event any other traffic may be affected by the movement. Violations of this section are subject to fines enumerated in § 31-41.1-4.