your calculation is not correct.
the bulk of 300k ppl will be crossing during peak hours 7am - 10am and reverse direction 5pm - 8pm.
of the 6 peak hours, only able to handle 60k human flow.
so, 240k of remaining ppl still have to travel during off peak hours or other mode of transportation.
so, i don't see it can solve the daily jamming problem.
just comparing w our MRT system which handle 3.2mil passengers daily, it need bigger capacity & more frequent trips to accommodate the flow at JB - Woodland.
it's very obvious to be undersized due to Msia budget constraint