321.318  Method of giving hand and arm signals.
  All signals herein required which may be given by hand and arm shall when so given be given from the left side of the vehicle and the following manner and interpretation thereof is suggested:
  1.  Left turn — Hand and arm extended horizontally.
  2.  Right turn — Hand and arm extended upward.
  3.  Stop or decrease of speed — Hand and arm extended downward.
[C39, §5025.08; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §321.318]
Referred to in §321.317, §805.8A(6)(q)
For applicable scheduled fine, see §805.8A, subsection 6