How about googling "VTA40 bus schedule"? First link is exactly what you're looking for. Or even googling "mountain view bus schedule"? First link is VTA, second is vta route search.

I guess doing a google search makes me a member of a secret society...

Juan, thanks for commenting, but it sounds like you have never used good transportation anywhere else in the world.

This information should be readily available for the passenger without needing to hunt. Real time information should be on the website, on signs at stations and bus stops as well as Twitter and other social media.

This is what I have experienced all over the World, but not Silicon Valley.

I'm not sure Silicon Valley is any worse than other places in the US. But if it is, here's the reason. The local provider is mainly VTA. This is an agency which places the top emphasis on low cost for the rider. They feel they need to serve mainly the "transit dependent". In VTA's eyes, this is generally low income people. THey are on a mission to make up for the otherwise high cost of living in the area.

So things that draw in riders who have other options (like their car) is low in VTA's priority list. They don't even make it clear what their "Rapid" bus services entail. Even static signage could be a big improvement, let alone dynamically update ones with current status. And VTA hss almost no services that make use of smart phones, which of course are the life blood of cutting edge services like Uber. It all traces back to their mission, the way they feel like they will NEVER attract people out of their cars, that their fate is intertwined with the very low income transit dependent folks.

Recently the Mayor of San Jose has proposed that his city request their share of a county-wide transit tax (not counting BART expansion which really is directed SOLELY at San Jose) be focused and limited to ONLY projects which serve the "transit dependent". This is a circular requirement. It's a form of prejudice. You know, if you start using transit, you do depend on it..... But by "transit dependent" he sees a euphemism for poor people.

This is the entire mentality of Silicon Valley with regard to VTA. It's a losing service provider that does a low class job, if you look at its offerings objectively. Low ridership means low farebox recovery. There's no check and balance and no feedback to planning as to which services are effective at attracting people who own cars, or even who can afford the mysteriously slightly higher fare (but similar actual cost) CalTrain. CalTrain is the hope for the future. They have been at least working on the signage with auto status display..

Not sure which trains you are talking about, but I know that the electric Caltrain signs do tell you the wait times for the next train. The electric signs don't say which stations the train serves, so you have to figure that out by looking up the train number on the schedule posted on the bulletin boards at the train station.

Note that skipping train stations is immensely popular with rush hour passengers since that makes the trains much faster. Non-rush-hour trains don't skip stations.

BART train signs also show waiting times. BART trains don't skip stations.