He drives seven days a week, all year round.
The only exception is Chinese New Year, when he takes two days off.
But come Sunday, taxi driver Lim Poh Wat, 54,will leave his Toyota Prius hybrid cab in its parking space and rely on his legs to take him places instead.
Prime Taxi and its exclusive marketing representatives, Adsite Media, are co-sponsoring 700 Prime Taxi drivers and their families as participants in the Big Walk.
Mr Lim will accompany his wife and two daughters, aged 24 and 26, on the scenic 5km route from Central to Marina Barrage.