Has there ever been a proposal to significantly upgrade Metrolink?
Not knowing any detail, it looks like the LA metrolink network could be easily converted into more of a S-Bahn/RER system, especially with the Union Station through tracks being built (probably). Has this ever been proposed?
I’m thinking the inner parts of the network, say three core lines between Irvine/Anaheim/Riverside, running to San Bernardino/San Fernando/Chatsworth. Frequent Service all day, like every 15 minutes per line. New multiple unit trains, maybe electrification and full double tracking?
EDIT: I've added an map of the sort of network I'm talking about. Solid lines are regular, bidirectional service at high frequencies, metro-style. Those are aimed at 'urban' parts of the network. Dashed lines are limited frequency commuter rail extensions. Perhaps at peak times only. Lines run through from north to south and east to west to create a regional metro
