APM: 5 Location: Chino Hills Pkwy and SR 71, Chino Hills Reassurance shield as SR 142 begins. APM: 3 Location: Chino Hills Pkwy and Carbon Canyon Rd, Chino Hills A mile later, SR 142 will turn. Before the turn we’re advised about length restrictions over the mountains. APM: 3 Location: Chino Hills Pkwy and Carbon Canyon Rd, Chino … Continue reading California State Route 142, SR 71 to SR 90