How Japanese folks bring their road bikes into the subway

We all know folding bikes are easy to multi mode travel. That is, cycle abit and perhaps take a train to a further place. Deploy the folding bike and explore abit.
However with a road bike it's almost unheard of to do so in Singapore. In Japan, this is quite normal. I saw that its possible in Japan and the 2 video shows you how to pack your road bike and take the train.

On the SG train

Francis Chu is like the only person I see bringing a full size bike into MRT in SG