This chapter shall not apply to permanent buildings, public utility poles, trees trimmed to the trunk to a line at least eight feet above the level of the intersection, saplings or plant species of open growth habits and not planted in the form of a hedge which are so planted and trimmed as to leave at all seasons a clear and unobstructed crossview, supporting members of appurtenances to permanent buildings existing on the date this section becomes effective, official warning signs or signals, places where the contour of the ground is such that there can be no cross-visibility at the intersection or signs mounted ten (10) feet or more above the ground and whose supports do not constitute an obstruction as defined in the preceding section.
No obstruction to cross-visibility shall be deemed to be excepted from the application of this chapter because of its being in existence at the time of the adoption hereof, unless expressly exempted by the terms of this chapter. (Prior code § 38.02.023)