Be aware of foreign bikes installing nails on their number plate. I came across this at the bike lane in Woodlands checkpoint as I am queuing for my turn. The bike as pictures shown installed sharp and Long nails in his bike number plate to avoid others to touch his bike from the back.
Luckily i saw the nails and avoid it if not the nails would have went into our tyre and cause our tyre to puncture. I hope you can take action regarding this as it is very inconsiderate and dangerous.