California is among the leaders pushing for wider adoption of zero-emission commercial vehicles, but the state is confronting the dual challenges of resolving a shortage of truck parking and the need to build charging infrastructure accessible to tractor-trailers. This is especially true near major container ports \u2014 a key area targeted for cleaner truck operations \u2014 according to a state transportation expert.\nLearn more about your ad choices. Visit podcastchoices.com/adchoices