. >> reporter: scott weaner says because the city is so dense, under the state-wide bill, food trucks would be barred from operating in most of the city. >> the heat would be off limits, the emission and castro. >> reporter: they want to scale back existing city regulations so trucks can set up closer to schools within one city block instead of three. >> this would help us achieve balance. mr. question #4: the assemblyman says there may be balance on his bill. >> we're willing to make modifications to adapt to a high density area like san francisco. >> reporter: he says something has to be done about kids eating unhealthy food. right now, 34% of california school kids are obese. >> thank you, ali. >>> tonight, santa claira county will consider tough nutrition standards. the new rules would apply to vnding machines in jails and hospitals and other place. the junk food would be replaced with fresh fruit, trail mix, water and iced tea. the new standards are part of the countiy obesity prevention efforts. if approved, the rules would take effect in july. a third student died following tha