Hi Crystal, i shared the same frustration with loud motor vehicles early in the morning. It took a lot of self control to just go back to sleep.
Complaining would be probably useless as its probably just another FT making a living in SG. Just live and let live. For me, i just add insultation on my doors and windows and foam padding where possible to lessen the noise.
One time, after being in Johore straight for 1 month, my wife came back to SG to stay, first question she asked, how come so noisy ah, got noise upstairs, sideways and even from downstairs (car traffic).
Do you have any contractor suggestions, in Johor area, for helping reduce noise from upstairs condo? I know it is a tough battle (to reduce such noise) but some padding on the ceiling might help?