EXPRESS
SERVICES (SBS) 501, 502, 503 and (TIBS) 520 starting 5th 
May
1997. EXPRESS
SERVICES (SBS) 501, 502, 503 and (TIBS) 520 starting 5th May
1997.
-Express Service 501, a one directional peak period service, will ply between Hougang and Robinson Rd/Fullerton Rd via the Central Expressway.
-Express Service 502, a two directional peak period service, will ply between Hougang and Boon Lay via Orchard Rd, and the Central Expressway.
-Express Service 503, a one directional peak period service, will ply between Tampines and Robinson Rd/Marina Square via East Coast Parkway.
-Express Service 520, a one directional peak period service, will ply
between Yishun and Outram MRT station via Seletar Expressway, Central Expressway
and Chinatown.
Fares
| Fare Stage | Fare |
| 10 stages or less | $1.50 |
| 11-13 stages | $1.65 |
| 14-18 stages | $1.80 |
| 19-23 satges | $1.95 |
| 23 stages and above | $2.10 |
* NO CONCESSIONARY TRAVEL
Timetable and frequency
Express 501, 503 and 520
Frequency: 15 mins
| TO CITY
(AM Peak) |
FROM CITY
(PM Peak) |
|
| WEEKDAY | 6:30am to 9:30am | 5:00pm to 8:00pm |
| SATURDAY | 6:30am to 9:30am | 12:30pm to 3:30pm |
Express 502
Frequency: 15 mins (PEAK HRS) and 20 mins (OFF PEAK HRS)
| HOUGANG CENTRAL | BOON LAY | |
| Weekday and Saturday | 6:00am to 10:00pm | 6:00am to 10:00pm |
NO EXPRESS SERVICES ON SUNDAYS AND PUBLIC HOLIDAYS