My mother was born in Singapore and we’ve been to visit many times. There are a lot of taxis, and they are quite cheap. As a tourist it was cheaper to take a taxi than public transit when we were a group of 3 or 4 people. 2 people was pretty close either way. I’m sure public transit is cheaper when you’re a full time resident, but my grandparents just use taxis all the time due to their mobility issues.