In Cerna v. City of Oakland (2008) 161 Cal.App.4th 1340, a motorist struck a family on their way to school as they walked in a marked, white crosswalk at an uncontrolled intersection. (Cerna, supra, 161 Cal.App.4th at p. 1345.) Cerna found that Vehicle Code section 21368 was inapplicable because the intersection was not contiguous to school grounds. (Cerna, at p. 1350.) Rather, the school's sole entrance was three blocks from the crosswalk where the plaintiffs were injured and 50 feet from the periphery of undeveloped school property. (Ibid.)