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(a) Official devices located at airports, designated parking areas, transportation mode interchange points, depots, and similar public service facilities shall be exempt from the provisions of this subchapter.
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(b) The provisions of this subchapter shall neither apply to any oscillating, rotating, or flashing railroad signal or safety light at any railroad crossing or upon any railroad right-of-way nor to the oscillating headlights on any railroad locomotive.
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(c) The prohibition set out in § 27-73-204 does not apply to signs or devices with constant illumination and color, including those in which the only movement is a very slow, steady rotation of the entire body of the sign or advertising device.
