Welcome to the forum Taichungman!
Taiwan looks like a great place to own, run and ride a 150 bike!
More than once, as I ride along on my 155 & 163cc scooters, I've found myself thinking - "Why would anyone want a bigger scooter than this?!"
Highways?....scooters were never intended for highway riding, IMHO.
That's the land of heavy, long wheelbase motorcycles.
Again, welcome here!
Stig
I agree - can't see anything when riding at speed on the highways. ..you better not be sightseeing!