One must make a loud noise before passing a car on the left.

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31-15-4 Overtaking on left. The following rules shall govern the overtaking and passing of vehicles proceeding in the same direction, subject to those limitations, exceptions, and special rules stated in this section: (1) The driver of a vehicle overtaking another vehicle proceeding in the same direction shall give a timely, audible signal and shall pass…

Any motorist who sights a team of horses coming toward him must pull well off the road, cover his car with a blanket or canvas that blends with the countryside, and let the horses pass. If the horses appear skittish, the motorist must take his car apart, piece by piece, and hide it under the nearest bushes.

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