Many moons ago (mid 80s), we use to eat at a place referred to as The Patio in Sembawang, Singapore.
The food was much the same as street food, and really tasty. You had a choice of Chinese, Indian and Malaysia. Some of the curries were quite the double burner variety.
Never heard of anyone getting sick due to that food in the 2 1/2years I was there.
My wife at the time did get food poisoning from Mcdonalds at ( I think it was) Thomson Plaza.
Like as has been said, watch the locals. They won't eat bad food from the same vendor twice.