Its first big project by IR with foreign collaboration at bigger level
As per the current work they are doing in rapid manner
They already acqutise land and more process is going on for land as fund is provided
Also 81% fund from JICA that will definitely hit it hard and to start construction late 2018 in my opinion but as per info they...
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will start it in june or july month
I think 4 year is good time for that as current scenario of project in IR on rapid manner if u take small example of electrification and doubling by IR companies as compared to ealrier ones
Along with it i have latest example of gazipur bridge as they are in so much rapid manner that they will complete the bridge before the deadlines
If similar pressure and funds and interest shown in bullet train then it will also run on 15 august 2022 as 75 years of independence of India
May be not end to end but at one depot may be surat or vadodra
They already done air survey and soil testing at all locations
Hope it will complete and we also comes in the list of bullet train nations...
Well it will be also a dream for every RF to travel in it

(1) Land acquisition recently started but reportedly going at brisk pace. Litigations may follow as it is reported that Farmers esp. in diva area are protesting against land acquisition. This is a weak link.
(2) Design drawing etc work is in advanced state
(3) soil testing etc work also in advanced stage in
(4) Funds shall not be a problem, as 81% shall come...
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from Japan, allocation from Indian side shall be done given the priority being accorded to this project by Modi Govt.
(5) 21km under sea tunnel in Mumbai area may take a long time.
(6) Govt. intends to start ground construction by end of 2018, and if it succeeds, the project shall take a minimum of 6 years to complete, say by end of 2024 and there can be no maximum limit. A lot depends on which Govt assumes power at Center after 2019 General Elections.
(7) 2022 target is definitely too tough, although it is not physically impossible.