I would be curious to know what is the advantage of using maglev technology if you only reach speeds of 120 km/h. "Firstly, there is no friction, and little noise or vibration; secondly, it eliminates the risk of derailment; and lastly, it is an eco-friendly method of transportation without emissions" looks like nothing special to me.
I'm not really sure how to answer this. You're kind of asking me to explain the value of safety and noise. I guess most people really put a high price on safety. Accidents do happen on subways:
Honestly, the safety argument looks pretty moot to me - monorails don't derail either. For the noise, that's cool, but I'm under the impression that a high speed maglev will be quite noisy too.
At <100mph, the TR08 is fairly quiet [0]. When I was en Elmsland for the noise testing, it was common for the vehicle to sneak up on us when it was running at lower speeds. At higher speeds, especially over 150 mph when aerodynamic noise kicks in, it is very loud.
As for the "high speed maglevs" making noise, you should read my comment again. I was clearly talking about low-speed maglevs. Yes, at 300 mph you are going to make some noise.
http://www.globaltimes.cn/content/860672.shtml
http://english.cri.cn/6909/2014/05/16/2702s826842.htm
A few of these would be nice in NY or LA. JFK to Manhattan in 20 minutes. Cross the width of Manhattan in 4 minutes.