Meaning of '直通车'?

[calibre2001]

I encountered this whilst reading an article on the recent performance of the HK stock market. Something to do with regulatory restrictions from the mainland govt. I'm guessing it's a modern coined slang?

[skylee]

Through-train.

In the context you quoted it means a proposal to allow mainland investors to (more) directly invest in the HK stock market.

This article by the Chief Executive of the HK Monetary Authority is relevant -> The "through train" scheme

There has been plenty of talk about this plan but nothing is concrete yet.

[magudo]

like some bus with title of "bullet" or "rocket"

the bus will directly gose to the destination, no stop,

[monto]

Any vehicle that goes directly to the destination can be called 直通车。derived from above, it also means "direct channel" or "direct means".

[SWWLiu]

Literally, "express bus/train" (which goes directly from origination to destination, nonstop). Figuratively, of course, it means a more direct route for some process, as indicated by others previously. ('直通车' is also occurs as "直達車" elsewhere.)