1973 Routes (E – East, N – North, W – West)
· E1: Changi Point – Delta Circus
· E1A: Changi Point – Delta Circus
· E2: Changi Point – Clementi Road
· E2A: Changi Point – New Bridge Road
· W5: Upper Bukit Timah Road – Bedok Road (Anglican High School)
· N10: Lorong Chuan/Braddell Road – Jurong Industrial Estate (International Road)
· N11: Lorong Chuan/Braddell Road – Tanjong Pagar Road
· N12/12A: Lorong Chuan/Braddell Road – Commonwealth Avenue/North Buona Vista Road
· E13/13A: Bedok Road – Commonwealth Avenue/North Buona Vista Road
· E21: Bedok Road – Jurong Industrial Estate (International Road)
· E22: Bedok Road – Commonwealth Avenue/North Buona Vista Road
· E30/30A: Changi Road/Siglap Road – Jurong Industrial Estate (Jalan Ahmad Ibrahim)
· E31: Changi Road – Outram Park
· E32: Changi Road – Pasir Panjang Road
· W40: Prince Edward Road – Delta East Primary School
· W41: Ganges Avenue – Jalan Eunos (End)
· E42: Telok Kurau Road – Worthing Road (North Car Division)
· W43: Ganges Avenue – Toa Payoh Estate
· E51: Jalan Eunos (End) – Alexandra Road
· E51A: Jalan Eunos (End) – South Bridge Road/Tanjong Pagar Road (Peak-hours only)
· E61: MacPherson Estate – Clementi Road/Bukit Timah Road (West Car Division)
· E62: MacPherson Estate – Alexandra Road
· E63: MacPherson Estate – Telok Blangah Road/Keppel Road
· N70/70A: Jalan Kayu (Seletar Airport) – Lorong 1 Geylang
· N72: Worthing Road (North Car Division) – Rhu Cross
· N80: Upper Changi Road/Tampines Road – Prince Edward Road
· N82: Tampines Way – New Bridge Road
· N83/83A: Upper Serangoon Road (End) – Potong Pasir
· N84: Upper Serangoon Road (End) – New Bridge Road
· E90: Paya Lebar Airport – Prince Edward Road
· E92: Paya Lebar Airport – Telok Blangah Road
· E93: Paya Lebar Airport – New Bridge Road
· E93A: Paya Lebar Airport – New Bridge Road
· N101: Lorong Chuan/Braddell Road – Toa Payoh (Feeder Service)
· N103/103A: Lorong Chuan/Braddell Road – North Buona Vista Road
· N121: St Michael’s – North Bridge Road (Parliament Place) (Peak-hours only 1-direction)
· N122: St Michael’s – Shenton Way (Peak-hours only)
· N122A: St Michael’s – New Bridge Road (Off-peak hours only)
· N123/123A: St Michael’s – Keppel Road
· N130: Thomson Road (Peirce Reservoir) – Keppel Road/Shenton Way
· N131: Thomson Road (Peirce Reservoir) – New Bridge Road
· W140: Toa Payoh – Prince Edward Road
· N142: Worthing Road (North Car Division) – Shenton Way
· W143: Toa Payoh – Jurong Road/Bukit Timah Road
· N146: Toa Payoh – Shenton Way
· W147: Toa Payoh – Clementi Road/Ulu Pandan Road
· N148: Toa Payoh – Lorong 1 Geylang
· N152: Toa Payoh – Telok Kurau
· N153: Toa Payoh – Jalan Bukit Merah
· W154: Toa Payoh – Jurong Industrial Estate (Shipyard Road)
· N155: Toa Payoh – Bedok Road
· N156: Toa Payoh – Upper Serangoon Road (End)
· N160/160A: Canberra Port/Johor Bahru Road – Crawford Street
· N161: Sembawang Road (End) – Prince Edward Road
· N162: Crawford Street – Upper Thomson Road
· N165/165A: Upp Thomson Road – Jurong Industrial Estate (Corporation Road)
· W170: Johor Bahru – Queen Street
Prior to that: Green 1 (Johor Bahru – Queen Street)
· W171/171A: Mandai Road – Queen Street/Lorong 1 Geylang
Prior to that: Green 2 (Mandai Road – Queen Street)
Green 3 (Woodlands Road – Lorong 1 Geylang)
· W174: Nanyang University – New Bridge Road
Prior to that: Green 5 (Jurong Rd – Queen Street)
· W176: Lim Chu Kang Road (End) – Prince Edward Road via Alexandra Road
Prior to that: Green 6 (Lim Chu Kang Rd – Shenton Way via Queen Street)
· W180: Upper Bukit Timah Road – Commonwealth Avenue/North Buona Vista Road
· W193/193A: Upper Bukit Timah Road – Prince Edward Road
· W196/196A: Crawford Street – Jurong Industrial Estate (Shipyard Road)
· W197: Changi Road/Siglap Road – Jurong Industrial Estate (Shipyard Road)
· W198/198A: Jalan Bukit Merah – Jurong Industrial Estate (Jalan Samulun)
· W200: Pasir Panjang Road/West Coast Road – Upper Bukit Timah Road
· W201: Jalan Jurong Kechil – Clementi Road
· W202: Corporation Drive – Bukit Timah Road/Clementi Road (West Car Depot)
· W203: Corporation Drive – Jurong Industrial Estate
· W204: Corporation Drive – Jurong Industrial Estate
· W205: Corporation Drive – Woodlands Road
· W206: Lim Chu Kang Road (End) – Bukit Timah Road/Clementi Road (West Car Depot)
Prior to that: Green 7 (Lim Chu Kang Road End – Boon Lay Way)
· W207: Toh Tuck Road – Bukit Timah Road
· W208: Marsiling Road – Kranji Road