(1) This subsection establishes a schedule of penalties for certain offenses in ORS 818.060 and 818.090. Commission of any of the described offenses relating to height or width limits is punishable according to the following schedule:
(a) Except as otherwise provided in this section, upon a first conviction, an offense is punishable as a Class D traffic violation.
(b) Upon a second conviction within one year after the first conviction, an offense is punishable as a Class C traffic violation.
(c) Upon a third or subsequent conviction within one year after the first conviction, an offense is punishable as a Class B traffic violation.
(2) Any offense that is described in ORS 818.060 or 818.090 and that is not punishable under subsection (1) of this section, is punishable as a Class D traffic violation.