321.405  Self-illumination.
  All mechanical signal devices shall be self-illuminated when in use at the times mentioned in section 321.384.
[C39, §5034.14; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §321.405]
Referred to in §321.1, 456A.12