Diary of a rail fan in Kansai,Japan(Ver.2)

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Why did I meet Portland Madam?

Portland welcomes contactless ticketing
http://www.metro-report.com/news/technology/single-view/view/portland-welcomes-contactless-ticketing.html

About 3 weeks ago, I met a madam from Portland. The reason why I had a chance to speak to her was that she didn't know how to go somewhere in Tokyo and asked me the way.
She talked about the red line of Portland, inside of which most of the people are allowed to live ,and outside of which people working in agriculture can live.
Its purpose is to make the city compact.

Owing to its policy?, Portland tram can cover the portion of transportation to an extent ,and can afford to install this system?