Theory test for e-bike, e-scooter riders to cost S$5 during first three months Toggle share menu Advertisement Theory test for e-bike, e-scooter riders to cost S$5 during first three months The mandatory online theory test for e-scooter and e-bike riders will be kept affordable, said Senior Minister of State for Transport Amy Khor in Parliament on Tuesday (May 11). Deborah Wong reports. 2 related media assets (image or videos) available. Click to see the gallery. 11 May 2021 11:40PM) Share this content Bookmark SINGAPORE: The mandatory online theory test for e-scooter and e-bike riders will be kept affordable, said Senior Minister of State for Transport Amy Khor in Parliament on Tuesday (May 11).