The jam started (or rather, my bus arrived at the jam) at around 1630. It was a weekday after school. The bus was relatively crowded, but we still managed to find seats at the rear (I was with a few schoolmates). The jam made us so bored that we started to talk to strangers (one friend befriended another stranger for that night), and saying hypothetical things, like what happens if someone wanted to visit the washroom while in the jam. One of the schoolmates even made an offensive gesture to a double-decker 161 when it overtook our bus in the jam (there were small movements here and there throughout the duration of the jam).
The traffic only started to move when the sky was pitch-dark. I remember the bus going at full speed (60 kmh) after clearing the jam, 3 hours later. In the end, what would be a 1 hour journey took about 4 hours to complete. Below are the photos taken with my Omnia W. Images are cropped/resized before uploading.

As seen, the buses are queuing up, waiting for the road to open again. Apparently they are also closing the road that night, to build the new stretch of road (https://www.lta.gov.sg/apps/news/page.a ... 79e15e925f). Taken at 1635.

Taken at 1645.

Also taken at 1645. This situation continued until 1900+.

Taken at 1714. Not a sight you see every day.

Finally out of the jam. The time is 1925, at Tampines.