There are many new Scooter rider course ( 機車練習場) , you can find the list for Taipei , in the below links (Chinese only)
Also you can search on google maps 機車路考練習場
Reference links :
https://www.ettoday.net/news/20190110/1352908.htm
https://tmvso.thb.gov.tw/catalog?node=eea3346c-072f-4806-9a4f-05d8ad28f0f4
https://sunny0731.pixnet.net/blog/post/42910076?m=on