VTA says increasing the diameter of the single large-bore tunnel from 43 feet to 48 feed will ease access and save money.
https://www.mercurynews.com/2022/08/26/vta-backs-new-massive-san-jose-bart-tunnel-as-advocates-push-for-more-entrances/
Santa Clara County transit agency looks to build one of the world’s biggest subways underneath San Jose.
https://www.mercurynews.com/2022/08/26/vta-backs-new-massive-san-jose-bart-tunnel-as-advocates-push-for-more-entrances/
VTA backs new, massive San Jose BART tunnel as advocates push for more entrances
www.mercurynews.comSanta Clara County transit agency looks to build one of the world’s biggest subways underneath San Jose.