Cal. Pub. Util. Code § 99232

For counties with a population of 500,000 or more, as determined by the 1970 federal decennial census, but excluding counties with more than 4,500 miles of maintained county roads as of 1970, the amount representing the apportionments of the areas of all operators shall be available solely for claims for Section 99234 purposes and for Article 4 (commencing with Section 99260) and Article 4.5 (commencing with Section 99275) purposes, and any of those moneys not allocated in any year shall be available for those claims in subsequent years.