Just kena summoned SGD 30 for an (honest) mistake of not displaying a parking coupon. (Because it was an honest mistake, I didn’t even turn on summon auntie, an iPhone app, to help me jaga the car. zzz). Update: My appeal was successful.
The steps below will only work for fines given by HDB. Check the bottom of your stub for more details
How to submit a parking fine appeal? It took me a while to find out the exact steps to take. So here, I’m sharing this with all. Always for the just in case. 
Step 1: Go to HDB’s infoweb – http://www.hdb.gov.sg
Step 2: Navigating HDB’s website
Screen shot | BIG_MOUSE | HDB infoweb Headers
Screen shot | BIG_MOUSE | HDB infoweb - submitting an appeal
The form itself requires your personal details (car registration, notice number, email and mobile number). Your appeal (or a sob-story for some) must fit within 3,000 characters.
You will then receive a confirmation email. Note that, and I quote, “you can withhold payment for the notice until you receive our reply”.
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