SEC. 89.26. TURNING MOVEMENTS AND REQUIRED SIGNALS.

   No person shall turn a vehicle from a direct crossing or move right or left upon a roadway until such movement can be made with reasonable safety and then only after the giving of an appropriate signal in a manner provided in this division in the event any other vehicle may be affected by the movement.

SEC. 89.27. DURATION OF SIGNAL.

   Any signal of intended turn right or left shall be given continuously during the last 100 feet traveled by the vehicle before turning.

SEC. 89.28. SIGNAL WHEN STOPPING.

   No person shall stop or suddenly decrease the speed of a vehicle on a roadway without first giving an appropriate signal in the manner provided in this division to the driver of any vehicle immediately to the rear when there is an opportunity to give the signal.

SEC. 89.29. METHOD OF SIGNAL.

   The signals required by this division shall be given either by means of the hand and arm or by a signal lamp or mechanical signal device, but when the body or load on any vehicle or combination of vehicles projects 24 inches or more to the left of the center of the steering wheel, or under any condition when a hand and arm signal would not be visible both to the front and rear of the vehicle or vehicles, then the vehicle or vehicles shall be equipped with, and signals shall be give by, a signal lamp or device.