Can I enter Tuas Checkpoint by foot?
Tuas Checkpoint is designated as a vehicular checkpoint, hence entry by foot is not allowed.
A Singapore Government Agency Website
Visitors who have arrived at Singapore Changi Airport and have been issued with their onward boarding passes for connecting flights out of Changi Airport can remain in the transit area of the airport without seeking immigration clearance, unless directed to do so by the authorities in Changi Airport. For more information on flights connections, please visit the Changi Airport Group website.