The direction from Mapletree Business City to PSA building is as follows:
1. Head to the ground level (3rd level, carpark) by the escalator
2. Upon reaching the ground level of the Mapletree Building, turn right and go straight through the corridor.
3. Turn right and enter through the glass door.
4. Turn left, and continue walking straight till the first intersection. Turn left and continue walking until reaching the lift. Take the lift to Level 1.
5. Turn left and walk along the barricades.
6. Turn left when reaching the first intersection. Cross the road and turn left.
7. Walk straight and turn right. Climb up the stairs and the entrance to PSA building is just in front.