NEW DELHI: Japan has offered a loan amounting to 81 per cent of the cost of the $15 billion Mumbai-Ahmedabad high speed rail project, Rajya Sabha was informed today.

"Government of Japan has given an assistance package proposal for Mumbai-Ahmedabad high speed rail project involving financial assistance to the tune of 81 per cent of the project cost as loan," Minister of State for Railways Manoj Sinha said in a written reply to a question.

With trains zipping along at up to 320k ..