Direction signs at MRT stations

A commuter approached me outside Yio Chu Kang MRT station. She wanted to know where to get a bus to go to Techpoint. She asked if it was bus service 70 (as she had checked the street directory), and where is the bus stop?

I took out the Public Transport Guide which I usually carry with me. It was indeed service 70 and indicated the nearest stop to Techpoint.

However, the commuter had walked in the wrong direction and is quite far away from the bus stop. She was not able to get clear direction from the other people.

I find the direction signs in our MRT stations to be inadequate. It is also difficult for someone to get useful directions, if they are not familiar with the bus services.