(1) Nothing contained in ORS 810.150 shall require the redesign, modification or replacement of street drains installed prior to September 13, 1975.
(2) Sections 2 to 169, chapter 451, Oregon Laws 1975, shall not apply to or govern the construction of or punishment for any vehicle code offense committed before June 27, 1975, or the construction and application of any defense to a prosecution for such an offense and do not impair or render ineffectual any court or administrative proceedings or procedural matters which occurred before June 27, 1975. [1983 c.338 §6; 1985 c.171 §1]