RWS Basement - Ingress lanes from Sentosa Gateway
Bus Technical 

Fleet Restrictions

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Route limitations, sometimes called fleet restrictions, usually refer to bus services that have regulations on fleet deployments, such as vehicle length, vehicle height, or various environmental factors. The Land Transport Authority (LTA) may also set restrictions on the buses deployed on certain bus routes by the public bus operators.

Non-Deployment of High Capacity Buses by Bus Services

1. Non-Deployment of Double-Deck Buses on Operational Bus Services
Service Operator Fleet Restriction Reason(s) Effective Date
9B SBST Single-deck buses only Insufficient passenger demand Since introduction (27 Nov 2023)
11 SBST Single-deck buses only Insufficient passenger demand Since introduction (14 Apr 1990)
14e SBST Single-deck buses only Insufficient passenger demand with occasional deployments Since introduction (12 Dec 2005)
15, 15A GAS Single-deck buses only Narrow lanes along Joo Chiat Pl & Telok Kurau Rd 5 Oct 1997
18, 18A SBST / GAS (from Jul 2026) Single-deck buses only Insufficient passenger demand with past permanent deployments 2004
18M Single-deck buses only Narrow lanes along Tampines St 96 Since introduction (22 Feb 2026)
24 SBST Single-deck buses only Low headroom in Changi Airport Passenger Terminal Buildings (PTBs) 1, 2 & 3 Since introduction (25 Jun 1983)
26 SBST Single-deck buses only Insufficient passenger demand with past permanent deployments 2003
27 SBST
 Single-deck buses only Low headroom in Changi Airport Passenger Terminal Buildings (PTBs) 1, 2 & 3 Since introduction (24 Jan 1988)
27A Insufficient passenger demand Since introduction (30 Dec 2002)
29 SBST / GAS (from Jul 2026) Single-deck buses only Narrow lanes along Netheravon Rd & Cranwell Rd Since 26 Jul 1987
29A Insufficient passenger demand Since introduction (4 Mar 2013)
30e SBST Single-deck buses only Insufficient passenger demand Since introduction (19 Sep 2005)
32 SBST Single-deck buses only Narrow lanes along Frankel Ave Since introduction (11 Apr 1971)
33, 33B SBST Single-deck buses only Narrow lanes along Telok Kurau Rd, Joo Chiat Pl & Tembeling Rd Since introduction (11 Apr 1971)
33A Insufficient passenger demand Since introduction (2002)
34, 34B GAS
 Single-deck buses only Low headroom in Changi Airport Passenger Terminal Buildings (PTBs) 1, 2 & 3 Since introduction (31 Jul 2005)
34A Insufficient passenger demand Since introduction (28 Mar 2011)
36, 36A GAS
 Single-deck buses only Low headroom in Changi Airport Passenger Terminal Buildings (PTBs) 1, 2 & 3 Since introduction (31 Jan 1994, as Service 16E)
36B Insufficient passenger demand Since introduction (2009)
38 SBST / GAS (from Jul 2026) Single-deck buses only Insufficient passenger demand Since introduction (7 Apr 2002)
39B SBST / GAS (from Jul 2026) Single-deck buses only Insufficient passenger demand Since introduction (27 May 2024)
40 SBST Single-deck buses only Narrow lanes along Siglap Rd 3 May 1992
42 SBST Single-deck buses only Narrow roads in Kembangan & Siglap estates Since introduction (5 Nov 1989, as Service M2)
43e GAS Single-deck buses only Insufficient passenger demand Since introduction (9 Sep 2019)
44 GAS Single-deck buses only Low headroom in Changi Airport Passenger Terminal Buildings (PTBs) 1, 2 & 3 Since introduction (10 Nov 2025)
53, 53A SBST Single-deck buses only Low headroom in Changi Airport Passenger Terminal Buildings (PTBs) 1, 2 & 3 23 Apr 1995
53M Insufficient passenger demand Since introduction (16 Aug 2015)
57 SBST Single-deck buses only Narrow lanes along Depot Rd Since introduction (31 Jul 2005)
63 SBST Single-deck buses only Narrow lanes along Redhill Cl, Redhill Rd & Jln Rumah Tinggi 23 May 1993
63M Insufficient passenger demand Since introduction (12 Mar 2012)
73 SBST Single-deck buses only Low headroom under Braddell Flyover 20 Jun 1983
Narrow lanes along S’goon Nth Ave 3, S’goon Nth Ave 4 & S’goon Nth Ave 5 20 Sep 1992
75 SMRT Single-deck buses only Insufficient passenger demand Since introduction (15 Jun 1981)
77 TTS Single-deck buses only Narrow lanes along Sixth Ave 1996
86A SBST
 Single-deck buses only Insufficient passenger demand Since introduction (24 Jun 2024)
92 SBST
 Single-deck buses only Narrow roads in Mt Sinai estate Since introduction (11 Sep 1989, as Service M1)
Narrow lanes along Science Pk Dr 17 Jan 1994 (as Service M1)
92A, 92B Since introduction (25 Aug 2024)
93 SBST Single-deck buses only Insufficient passenger demand with occasional deployments 2010
94A SBST Single-deck buses only Insufficient passenger demand Since introduction (2001)
100, 100A SBST Single-deck buses only Narrow lanes along Upp Aljunied Rd Since introduction (11 Apr 1971)
102B SBST Single-deck buses only Insufficient passenger demand Since introduction (9 Oct 2023)
105 SBST

 Single-deck buses only Low headroom under Braddell Flyover 3 May 1992
105B Insufficient passenger demand Since introduction (1999)
110 SMRT Single-deck buses only Low headroom in Changi Airport Passenger Terminal Buildings (PTBs) 1, 2 & 3 Since introduction (22 Oct 2017)
112 SBST

 Single-deck buses only Narrow lanes along Hougang St 92 Since introduction (15 Feb 2004)
112A, 112B Insufficient passenger demand Since introduction (15 Feb 2004)
113, 113A SBST Single-deck buses only Narrow lanes along Hougang St 11 Since introduction (15 Feb 2004)
115 SBST Single-deck buses only Insufficient passenger demand Since introduction (30 Oct 2004)
116, 116A SBST Single-deck buses only Narrow lanes along S’goon Nth Ave 3, S’goon Nth Ave 4 & S’goon Nth Ave 5 Since introduction (18 Nov 2012)
120 SBST Single-deck buses only Narrow lanes along Telok Blangah Hts, Telok  Telok Blangah St 32, Telok Blangah Dr & Telok Blangah St 31 Since introduction (21 Apr 2013)
122 SBST Single-deck buses only Narrow lanes along C’wealth Dr Since introduction (15 Mar 2015)
123M SBST Single-deck buses only Insufficient passenger demand Since introduction (28 Jan 2008)
124 SBST Single-deck buses only Narrow lanes along Telok Blangah Hts, Telok Blangah St 31 & Telok Blangah Dr 23 Nov 2003
125A SBST Single-deck buses only Insufficient passenger demand Since introduction (2010)
129A, 129B SBST / GAS (from Jul 2026) Single-deck buses only Insufficient passenger demand Since introduction (26 Aug 2024)
131, 131A SBST Single-deck buses only Narrow lanes along Norfolk Rd, Owen Rd, Dorset Rd & Kent Rd 3 May 1992
135 SBST
 Single-deck buses only Narrow lanes along Upp Aljunied Rd 19 Apr 1987
Narrow lanes along Telok Kurau Rd, Frankel Ave & Jln Kembangan 28 Feb 2021
Narrow lanes along Haig Rd 13 Apr 2025
136 GAS Single-deck buses only Insufficient passenger demand 4 Sep 2016
137 SBST
 Single-deck buses only Narrow roads in Kaki Bt Ind Est Since introduction (21 Oct 2017)
137A Insufficient passenger demand Since introduction (11 Feb 2019)
138, 138A, 138C SBST
 Single-deck buses only Narrow lanes along Mandai Rd & Mandai Lake Rd Since introduction (26 Apr 1994)
138M SBST Insufficient passenger demand Since introduction (15 Mar 2025)
139A SBST Single-deck buses only Insufficient passenger demand Since introduction (12 Dec 2022)
140 SBST Single-deck buses only Narrow roads in St. George’s Est Since introduction (14 Dec 2014)
141 SBST Single-deck buses only Narrow lanes along Norfolk Rd, Owen Rd & Kent Rd Since introduction (9 Jun 2013)
142, 142A SBST Single-deck buses only Narrow roads in Potong Pasir Est Since introduction (25 Nov 1984)
145A SBST Single-deck buses only Insufficient passenger demand Since introduction (28 Jun 2010)
146 SBST Single-deck buses only Insufficient passenger demand Since introduction (25 Feb 2024)
148 SBST Single-deck buses only Narrow roads in Potong Pasir Est Since introduction (20 Apr 2025)
150 SBST Single-deck buses only Narrow lanes along Joo Chiat Pl & Telok Kurau Rd Since introduction (20 Mar 2016)
155 SBST Single-deck buses only Narrow lanes along Upp Aljunied Rd Since introduction (11 Apr 1971)
Narrow lanes along Joo Chiat Pl & Telok Kurau Rd
156 SBST Single-deck buses only Narrow lanes along Sixth Ave Since introduction (5 Dec 1993)
158, 158A SBST
 Single-deck buses only Insufficient passenger demand Since introduction (8 Aug 1971)
159 SBST

 Single-deck buses only Low headroom under Braddell Flyover 20 Jun 1983
Narrow lanes along S’goon Nth Ave 5 & S’goon Nth Ave 6 18 Feb 2001
159A Since introduction (6 Apr 2009)
159B Insufficient passenger demand Since introduction (7 Jan 2013)
160 SBST
 SPAD-registered single-deck buses only Low headroom in W’lands & Johor Bahru Checkpts & narrow roads in Johor Bahru Since introduction (5 Sep 2004)
160A Single-deck buses only Insufficient passenger demand Since introduction (19 Nov 2018)
162 SBST Single-deck buses only Insufficient passenger demand Since introduction (25 Feb 2001)
167 TTS Single-deck buses only Insufficient passenger demand with occasional deployments 17 Dec 2023
170 SBST SPAD-registered single-deck buses only Low headroom in W’lands & Johor Bahru Checkpts & narrow roads in Johor Bahru Since introduction (11 Apr 1971)
170X Since introduction (10 Nov 2003)
173 TTS
 Single-deck buses only Narrow roads in Princess Elizabeth Est Since introduction (11 Apr 1971)
Narrow roads in Toh Tuck est 7 Apr 1991
Narrow lanes along Bt Batok St 21 3 May 1992
173A Since introduction (5 Nov 2007)
174e SBST Single-deck buses only Insufficient passenger demand with occasional deployments Since introduction (28 Mar 2005)
175 SBST Single-deck buses only Narrow lanes along Depot Rd Since introduction (11 Mar 2007)
177 TTS Single-deck buses only Narrow lanes along Gombak Dr & within MINDEF CP Since introduction (26 Apr 1989)
188e SMRT Single-deck buses only Insufficient passenger demand 1 Sep 2016
191 SBST Single-deck buses only Narrow lanes along Portsdown Rd Since introduction (29 May 1988)
194 SMRT Single-deck buses only Insufficient passenger demand with past occasional deployments during special events at former Jurong Bird Pk 3 Jan 2023
195, 195A SBST Single-deck buses only Narrow lanes along Depot Rd 18 Dec 1988
Narrow lanes along C’wealth Dr
196e SBST Single-deck buses only Insufficient passenger demand Since introduction (12 Dec 2005)
200, 200A SBST Single-deck buses only Narrow lanes along Sth Buona Vista Rd Since introduction (11 Apr 1971)
222A SBST Single-deck buses only Insufficient passenger demand Since introduction (11 Apr 2011)
228 SBST Single-deck buses only Insufficient passenger demand Since introduction (15 Sep 1980)
229 SBST Single-deck buses only Insufficient passenger demand Since introduction (15 Sep 1985, as Service 219)
230 SBST Single-deck buses only Narrow lanes along Toa Payoh East & Kim Keat Ave Since introduction (24 Sep 2023)
Narrow lanes along Lor 8 Toa Payoh 26 Jan 2025
Narrow lanes along Lor 7 Toa Payoh
230M SBST Narrow lanes along Toa Payoh East & Kim Keat Ave Since introduction (8 Jun 2025)
231 SBST Single-deck buses only Narrow lanes along Lor 5 Toa Payoh 11 Mar 2012
232 SBST Single-deck buses only Narrow lanes along Toa Payoh East & Lor 7 Toa Payoh 19 May 2002
235 SBST Single-deck buses only Narrow lanes along Lor 5 Toa Payoh Since introduction (26 Dec 1983)
Narrow lanes along Lor 3 Toa Payoh
Narrow lanes along Toa Payoh East 31 Jan 2010
238 SBST Single-deck buses only Narrow lanes along Toa Payoh East & Lor 8 Toa Payoh Since introduction (26 Dec 1983)
261 SBST Single-deck buses only Narrow lanes along Ang Mo Kio Ind Pk 1 5 Jul 1981
262 SBST Single-deck buses only Narrow lanes along Ang Mo Kio St 11 Sep 1985
265 SBST Single-deck buses only Narrow lanes along Ang Mo Kio St 11 24 Mar 2002
268, 268A SBST
 Single-deck buses only Narrow lanes along Ang Mo Kio Ind Pk 2 (West) Since introduction (30 Mar 1980, as Service 263)
Narrow lanes along Ang Mo Kio Ind Pk 2 (East) 24 Mar 2002
268B, 268C Insufficient passenger demand Since introduction (1 Sep 2016)
269, 269A SBST
 Single-deck buses only Insufficient passenger demand Since introduction (10 Apr 1983)
272 SBST Single-deck buses only Insufficient passenger demand Since introduction (28 Sep 1980)
273 SBST Single-deck buses only Narrow lanes along Telok Blangah Hts, Telok Blangah St 32 & Telok Blangah Dr Since introduction (28 Sep 1980)
284 TTS Single-deck buses only Narrow cul-de-sac along Clementi Ave 4 Since introduction (16 Jul 1979)
292 SBST / GAS (from Jul 2026) Single-deck buses only Narrow lanes along Tampines St 22 Since introduction (20 Feb 1983)
Narrow lanes along Tampines Lane & Tampines St 11 19 Jun 1988
296 SBST / GAS (from Jul 2026) Single-deck buses only Narrow lanes along Tampines Nth Dr 2 Since introduction (28 Apr 2024)
298 SBST / GAS (from Jul 2026) Single-deck buses only Narrow lanes along Tampines St 82, Tampines St 85 & Tampines St 86 Since introduction (21 Oct 2017)
299 SBST / GAS (from Jul 2026) Single-deck buses only Narrow lanes along Tampines St 96, Tampines St 95 & Tampines St 94 Since introduction (27 Apr 2025)
300 SMRT Single-deck buses only Insufficient passenger demand 18 Mar 2024
307 SMRT
 Single-deck buses only Narrow lanes along Choa Chu Kang Ctrl & Teck Whye Lane 31 Oct 2001
307A Insufficient passenger demand Since introduction (1 Sep 2016)
315 SBST Single-deck buses only Narrow lanes along S’goon Nth Ave 3 & S’goon Nth Ave 4 11 Jun 1995
Narrow lanes along S’goon Nth Ave 5 30 Jan 2011
317 SBST Single-deck buses only Narrow lanes in S’goon Gdn Est Since introduction (31 Oct 1977)
325 SBST Single-deck buses only Insufficient passenger demand Since introduction (8 Jan 1995)
329 SBST Single-deck buses only Insufficient passenger demand Since introduction (9 Jul 2017)
354 GAS Single-deck buses only Narrow lanes along Pasir Ris Cl Since introduction (2 Feb 1997)
Narrow lanes along Jln Loyang Besar 25 Apr 2010
358 GAS Single-deck buses only Narrow lanes along Pasir Ris St 41 Since introduction (2 Feb 1997)
359 GAS Single-deck buses only Narrow lanes along Pasir Ris St 71 Since introduction (23 Feb 1997)
Narrow lanes along Pasir Ris St 51 6 Sep 1998
371 SBST Single-deck buses only Narrow lanes along Rivervale Cres Since introduction (19 Jan 2014)
372 SBST Single-deck buses only Insufficient passenger demand Since introduction (22 Dec 2000)
374 SBST Single-deck buses only Insufficient passenger demand Since introduction (12 Mar 2017)
381 GAS Single-deck buses only Insufficient passenger demand Since introduction (12 Mar 2017)
382A GAS Single-deck buses only Insufficient passenger demand Since introduction (1 Jul 2019)
384 GAS Single-deck buses only Insufficient passenger demand Since introduction (27 Dec 2020)
386, 386A GAS Single-deck buses only Insufficient passenger demand with past permanent deployments 1 Jan 2024
400 SBST Single-deck buses only Insufficient passenger demand with past permanent deployments 5 May 2024
401 SBST Single-deck buses only Narrow lanes along East Coast Pk Svc Rd Since introduction (24 Oct 1976)
Narrow lanes along Siglap Rd 21 Sep 1997
403 GAS Single-deck buses only Narrow lanes along Elias Rd & Pasir Ris Rd Since introduction (3 Apr 1977)
405 SMRT Single-deck buses only Narrow lanes along Old Choa Chu Kang Rd (End) Since introduction (18 Jul 1993)
410G SBST Single-deck buses only Narrow lanes along Bishan St 12 (westbound) Since introduction (3 May 1992)
454 SBST / GAS (from Jul 2026) Single-deck buses only Narrow lanes along Tampines St 85 & Tampines St 86 Since introduction (9 Dec 2024, as Service 298X)
456 SBST Single-deck buses only Insufficient passenger demand 24 Nov 2025
457 SBST Single-deck buses only Insufficient passenger demand Since introduction (23 Mar 2026)
458 SBST Single-deck buses only Insufficient passenger demand Since introduction (23 Mar 2026)
459 GAS Single-deck buses only Insufficient passenger demand Since introduction (27 Apr 2026)
460 SBST / GAS (from Jul 2026) Single-deck buses only Narrow lanes along Tampines Nth Dr 2 Since introduction (27 Apr 2026)
666 GAS Single-deck buses only Insufficient passenger demand Since PTO takeover (2 Mar 2020)
667 SBST Single-deck buses only Narrow cul-de-sac along Clementi Ave 4 Since PTO takeover (9 Mar 2020)
668 SBST Single-deck buses only Insufficient passenger demand Since PTO takeover (14 Dec 2020)
673 GAS Single-deck buses only Insufficient passenger demand Since introduction (14 Oct 2024)
675 SBST Single-deck buses only Insufficient passenger demand Since introduction (2 Jan 2025)
676 SBST Single-deck buses only Insufficient passenger demand Since introduction (2 Jan 2025)
677 SBST Single-deck buses only Insufficient passenger demand Since introduction (2 Jan 2025)
679 SBST
 Single-deck buses only Insufficient passenger demand Since introduction (15 Dec 2025)
680 SBST Single-deck buses only Insufficient passenger demand Since introduction (15 Dec 2025)
681 SBST Single-deck buses only Insufficient passenger demand Since introduction (15 Dec 2025)
682 SBST Single-deck buses only Insufficient passenger demand Since introduction (15 Dec 2025)
683 GAS Single-deck buses only Insufficient passenger demand Since introduction (15 Dec 2025)
684 SMRT Single-deck buses only Insufficient passenger demand Since introduction (15 Jun 2026)
803 SBST Single-deck buses only Insufficient passenger demand Since introduction (16 Feb 2014)
805 SBST Single-deck buses only Insufficient passenger demand Since introduction (14 Feb 2016)
807C SBST Single-deck buses only Insufficient passenger demand Since introduction (29 Jun 2026)
825 TTS Midibuses & single-deck buses only Narrow lanes in Lentor estate Since introduction (17 Aug 1988)
852 SBST Single-deck buses only Insufficient passenger demand Since introduction (8 Dec 1985)
858, 858B TTS
 Single-deck & articulated buses only Full route deployment not permitted due to low headroom in Changi Airport Passenger Terminal Buildings (PTBs) 1, 2 & 3 2 Nov 1997
858A Insufficient passenger demand Since introduction (1999)
860 SBST Single-deck buses only Insufficient passenger demand 15 Oct 2017
871, 871A TTS Single-deck buses only Narrow lanes along Bt Batok East Ave 5 & Bt Batok St 52 Since introduction (21 Jul 2024)
882A TTS Single-deck buses only Insufficient passenger demand Since introduction (18 Aug 2014)
902 SMRT Single-deck buses only Insufficient passenger demand Since introduction (17 Apr 2006)
904 SMRT Single-deck buses only Insufficient passenger demand Since introduction (18 Aug 2013)
911A SMRT Single-deck buses only Insufficient passenger demand Since introduction (11 Mar 2024)
913M SMRT Single-deck buses only Narrow lanes along W’lands St 32 Since introduction (17 Mar 2019)
920 SMRT Single-deck buses only Insufficient passenger demand with past permanent deploymens 2020
925, 925A SMRT Single-deck buses only Narrow 3-point turn at Kranji Resvr CP B Since introduction (7 Apr 1986)
927 SMRT Single-deck buses only Narrow lanes along Mandai Lake Rd Since introduction (9 Apr 1995)
945 TTS Single-deck buses only Narrow lanes along Bt Batok East Ave 5 & Bt Batok St 52 Since introduction (6 Apr 1986, as Service 365)
950 SMRT SPAD-registered single-deck buses only Low headroom in W’lands & Johor Bahru Checkpts & narrow roads in Johor Bahru Since introduction (19 Sep 2004)
962B, 962C SMRT Single-deck buses only Insufficient passenger demand Since introduction (26 Aug 2013)
967 SMRT Single-deck buses only Insufficient passenger demand Since introduction (12 Jan 2025)
969A TTS
 Single-deck buses only Insufficient passenger demand Since introduction (15 Jul 2013)
970 SMRT Single-deck buses only Narrow lanes along Sixth Ave Since introduction (20 Aug 2000)
973 SMRT
 Single-deck buses only Narrow lanes along Dairy Farm Rd Since introduction (26 Feb 2017)
973A Insufficient passenger demand Since introduction (13 Jan 2019)
976 SMRT Single-deck buses only Insufficient passenger demand Since introduction (10 Nov 2019)
983M SMRT Single-deck buses only Insufficient passenger demand Since introduction (18 Mar 2024)
993 SBST Single-deck buses only Insufficient passenger demand Since introduction (26 Jul 2020, as Service 160M)
2. Non-Deployment of Articulated Buses on Operational Bus Services*

The 40 existing MAN A24 (NG363F) articulated buses in Singapore – are only maintained/operated by the following operators in the following depots on selected routes:

Under LTA regulations since the Bus Contracting Model (BCM), articulated buses are typically not deployed on long-distance trunk routes in favour of double-deck buses, which are perceived as more efficient in carrying passengers over extended route lengths and travel time.

However, the following bus services had previously operated with regular articulated bus deployments, and could theoretically still do so, notwithstanding the current fleet restrictions imposed by the LTA. Bus Services 106/106A, 189/189A & 945 are excluded, as they were transferred to Tower Transit and managed under Bulim Bus Depot since 2016, which currently does not have articulated buses in its fleet.

Service Operator/Depot Fleet Restriction Reason(s) Effective Date
13, 13A SBST
 Single & double-deck buses only Long distance route not under Seletar Bus Package 4 Jan 2025
24 SBST Single-deck buses only Long distance route 18 Mar 2018
45, 45A SBST Single & double-deck buses only Long distance route not under Seletar Bus Package 4 Jan 2025
61 SMRT (Gali Batu) Single & double-deck buses only Long distance route 1 Sep 2016
67 SMRT (Gali Batu / Woodlands) Single & double-deck buses only Long distance route 1 Sep 2016
70, 70A, 70B, 70M SBST Single & double-deck buses only Long distance route 18 Mar 2018
71, 71A SBST Single & double-deck buses only Inter-town trunk route 18 Mar 2018
72, 72A, 72B SBST (until Jul 2026) Single & double-deck buses only Long distance route 4 Jan 2025
75 SMRT (Gali Batu / Woodlands) Single-deck buses only Long distance route with insufficient passenger demand 6 Aug 1995
103 SBST
 Single & double-deck buses only Long distance route not under Seletar Bus Package 16 Mar 2025
130 SBST Single & double-deck buses only Long distance route 18 Mar 2018
133 SBST Single & double-deck buses only Long distance route 18 Mar 2018
135 SBST
 Single-deck buses only Long distance route with narrow lanes along Upp Aljunied Rd 18 Mar 2018
Long distance route with narrow lanes along Frankel Ave & Jln Kembangan 28 Feb 2021
Long distance route with narrow lanes along Haig Rd 13 Apr 2025
138, 138A, 138C SBST
 Single-deck buses only Narrow lanes along Mandai Rd & Mandai Lake Rd 18 Mar 2018
138M Single-deck buses only Insufficient passenger demand Since introduction (15 Mar 2025)
162 SBST Single-deck buses only Insufficient passenger demand 18 Mar 2018
167 TTS Single-deck buses only Insufficient passenger demand 3 Oct 2021
169, 169A, 169B TTS Single & double-deck buses only Long distance route, with occasional deployments under TTS 19 Sep 2021
171 TTS Single & double-deck buses only Inter-town trunk route 5 Sep 2021
172 SMRT (Gali Batu) Single & double-deck buses only Inter-town trunk route 1 Sep 2016
176 SMRT (Gali Batu) Single & double-deck buses only Long distance route 1 Sep 2016
178, 178A SMRT (Woodlands) Single & double-deck buses only Long distance route 1 Sep 2016
187 SMRT (Woodlands) Single & double-deck buses only Long distance route 1 Sep 2016
188 SMRT (Gali Batu) Single & double-deck buses only Long distance route 1 Sep 2016
188e SMRT (Gali Batu) Single-deck buses only Long distance route with insufficient passenger demand 1 Sep 2016
190, 190A SMRT (Gali Batu) Single & double-deck buses only Long distance route with occasional deployments 1 Sep 2016
261 SBST
 Single-deck buses only Narrow lanes along Ang Mo Kio Ind Pk 1 18 Mar 2018
262 SBST Single-deck buses only Narrow lanes along Ang Mo Kio St 11 18 Mar 2018
265 SBST Single-deck buses only Narrow lanes along Ang Mo Kio St 11, St 52, St 53 & St 54 18 Mar 2018
268, 268A SBST
 Single-deck buses only Narrow lanes along Ang Mo Kio Ind Pk 2 18 Mar 2018
268B, 268C Insufficient passenger demand
269, 269A SBST Single-deck buses only Narrow lanes along Ang Mo Kio St 61 18 Mar 2018
300 SMRT (Gali Batu) Single-deck buses only Narrow lanes along Choa Chu Kang Ave 3 due to JRL construction Jan 2023
301 SMRT (Gali Batu) Single & double-deck buses only Narrow lanes along Choa Chu Kang Ave 3 due to JRL construction Aug 2022
307, 307A SMRT (Gali Batu) Single-deck buses only Narrow lanes along Choa Chu Kang Ctrl & Teck Whye Lane 31 Oct 2001
451 SMRT (Gali Batu) Single & double-deck buses only Insufficient passenger demand Since introduction (17 Nov 2025)
455 SMRT (Gali Batu) Single & double-deck buses only Insufficient passenger demand Since introduction (24 Nov 2025)
647 SMRT (Gali Batu) Double-deck buses only Long distance route Since introduction (15 Jun 2026)
648 SMRT (Woodlands) Single & double-deck buses only Long distance route Since introduction (15 Jun 2026)
649 SMRT (Gali Batu) Double-deck buses only Long distance route Since introduction (15 Jun 2026)
650 SBST Double-deck buses only Long distance route Since introduction (15 Jun 2026)
665 SMRT (Woodlands) Single & double-deck buses only Long distance route 31 May 2021
684 SMRT (Gali Batu) Single-deck buses only Insufficient passenger demand Since introduction (15 Jun 2026)
800 SBST Single & double-deck buses only Insufficient passenger demand Feb 2025
801 TTS Single & double-deck buses only Insufficient passenger demand Since introduction (23 Jan 2022)
803 SBST Single-deck buses only Insufficient passenger demand 25 Mar 2018
805 SBST Single-deck buses only Insufficient passenger demand 18 Mar 2018
807C SBST Single-deck buses only Insufficient passenger demand Since introduction (29 Jun 2026)
812 SBST Single & double-deck buses only Insufficient passenger demand 25 Mar 2018
825 TTS Single-deck & midibuses only Narrow lanes in Lentor estate 3 Oct 2021
851 SBST Single & double-deck buses only Long distance route 25 Mar 2018
851e SBST Single & double-deck buses only Long distance route Since introduction (27 May 2018)
852 SBST Single-deck buses only Long distance route with insufficient passenger demand 25 Mar 2018
853, 853M TTS Single & double-deck buses only Long distance route 5 Sep 2021
854 TTS Single & double-deck buses only Long distance route 5 Sep 2021
854e TTS Double-deck buses only Long distance route 5 Sep 2021
855 TTS Single & double-deck buses only Long distance route 5 Sep 2021
856, 856A, 856B, 856C TTS Double-deck buses only Long distance route with occasional deployments under TTS 5 Sep 2021
857, 857A, 857B TTS Single & double-deck buses only Long distance route 5 Sep 2021
858B TTS Single-deck buses only Insufficient passenger demand 19 Sep 2021
859 TTS
 Single & double-deck buses only Inter-town trunk route 3 Oct 2021
859A Insufficient passenger demand
859B
860 SBST Single-deck buses only Insufficient passenger demand 15 Oct 2017
861, 861A, 861B TTS
 Single & double-deck buses only Inter-town trunk route Since introduction (15 Sep 2024)
861M Double-deck buses only Insufficient passenger demand Since introduction (24 Mar 2025)
882 TTS
 Single & double-deck buses only Insufficient passenger demand 3 Oct 2021
882A Single-deck buses only
883, 883B TTS
 Single & double-deck buses only Inter-town trunk route 3 Oct 2021
883M Inter-town trunk route 3 Oct 2021
900 SMRT (Woodlands) Single & double-deck buses only Narrow lanes along W’lands Dr 17 23 Apr 2018
901 SMRT (Woodlands)
 Single & double-deck buses only Insufficient passenger demand 23 Apr 2018
901M Single & double-deck buses only Insufficient passenger demand Since introduction (23 Jun 2019)
902 SMRT (Woodlands) Single-deck buses only Insufficient passenger demand 1 Sep 2016
904 SMRT (Woodlands) Single-deck buses only Insufficient passenger demand 1 Sep 2016
911A SMRT (Woodlands) Single-deck buses only Insufficient passenger demand Since introduction (11 Mar 2024)
912A SMRT (Woodlands) Single & double-deck buses only Insufficient passenger demand Since introduction (10 Sep 2017)
913M SMRT (Woodlands) Single-deck buses only Narrow lanes along W’lands St 32 Since introduction (17 Mar 2019)
920 SMRT (Gali Batu) Single-deck buses only Insufficient passenger demand 1 Sep 2016
922 SMRT (Gali Batu) Single & double-deck buses only Insufficient passenger demand 1 Sep 2016
925, 925A SMRT (Woodlands)
 Single-deck buses only Narrow 3-point turn at Kranji Resvr CP B Since introduction (6 Apr 1986)
925M Single & double-deck buses only Insufficient passenger demand 1 Sep 2016
927 SMRT (Gali Batu) Single-deck buses only Narrow lanes along Mandai Rd & Mandai Lake Rd 1 Sep 2016
950 SMRT (Woodlands) SPAD-registered single-deck buses only Narrow lanes in W’lands & Johor Bahru Checkpts & narrow roads in Johor Bahru Since introduction (19 Sep 2004)
960 SMRT (Woodlands) Single & double-deck buses only Long distance route 1 Sep 2016
960e SMRT (Woodlands) Single & double-deck buses only Long distance route Since introduction (28 Oct 2018)
961, 961M SMRT (Woodlands) Single & double-deck buses only Long distance route 1 Sep 2016
962 SMRT (Woodlands)
 Single & double-deck buses only Inter-town trunk route 10 Sep 2017
962B, 962C Single-deck buses only Insufficient passenger demand 1 Sep 2016
963 TTS Single & double-deck buses only Long distance route 19 Sep 2021
963e TTS Double-deck buses only Long distance route 19 Sep 2021
964 SMRT (Woodlands) Single & double-deck buses only Industrial trunk route 1 Sep 2016
965, 965A TTS Single & double-deck buses only Long distance route with occasional deployments under TTS 19 Sep 2021
966, 966A TTS Single & double-deck buses only Long distance route 19 Sep 2021
967 SMRT Single-deck buses only Insufficient passenger demand Since introduction (12 Jan 2025)
969, 969A TTS Single & double-deck buses only Long distance route with occasional deployments under TTS 19 Sep 2021
970 SMRT (Gali Batu) Single-deck buses only Long distance route with narrow lanes along Sixth Ave Since introduction (20 Aug 2000)
972, 972A, 972M SMRT (Gali Batu)
 Single & double-deck buses only Long distance route 1 Sep 2016
973 SMRT (Gali Batu)
 Single-deck buses only Narrow lanes along Dairy Farm Rd & Hume Ave Since introduction (26 Feb 2017)
973A Insufficient passenger demand Since introduction (13 Jan 2019)
975, 975C SMRT (Gali Batu) Single & double-deck buses only Inter-town trunk route 1 Sep 2016
975A Double-deck buses only Insufficient passenger demand Since introduction (28 Jan 2020)
975B Single & double-deck buses only Short distance route 10 Mar 2019
976 SMRT (Gali Batu) Single-deck buses only Insufficient passenger demand Since introduction (10 Nov 2019)
979 SMRT (Gali Batu) Double-deck buses only Inter-town trunk route 1 Sep 2016
980 TTS Single & double-deck buses only Long distance route 3 Oct 2021
981 TTS Single & double-deck buses only Industrial trunk route 3 Oct 2021
983, 983A SMRT (Gali Batu)
 Single & double-deck buses only Inter-town trunk route 1 Sep 2016
983M Single-deck buses only Insufficient passenger demand Since introduction (18 Mar 2024)
985 SMRT (Gali Batu / Woodlands) Single & double-deck buses only Long distance route 1 Sep 2016
991 SMRT (Gali Batu)
 Double-deck buses only Inter-town trunk route Since introduction (8 Jul 2018)
991A, 991B Insufficient passenger demand
LCS1 TTS Single-deck buses only Insufficient passenger demand 23 Apr 2025
LCS2 TTS Single-deck buses only Insufficient passenger demand 23 Apr 2025

Unofficial Deployment Restrictions on Airport Bus Services (Oct 2017 – Sep 2021)

In Oct 2017, unofficial restrictions were imposed by the LTA on the bus models deployed on bus services serving Changi Airport. The new restriction required buses deployed on airport bus services to be retrofitted with an internal announcement system.

At the time, only Mercedes-Benz Citaro buses were fitted with such announcement systems. As such, massive redeployments were made for Bus Services 27, 53 and 858, swapping out the remaining Scania K230UB and MAN A22 (Euro 5) buses for Mercedes-Benz Citaro buses. Bus Services 24, 34 & 36 were already operating a full fleet of Mercedes-Benz Citaro buses under their respective BCM route packages, while Bus Service 110 was launched with a full fleet of Mercedes-Benz Citaro buses in Oct 2017.

Buses procured by LTA since 2018 are retrofitted with announcement systems, which eventually reduced the need for such a restriction on bus deployments for airport bus services.

In Sep 2021, Tower Transit took over the operation of Bus Service 858 under the Sembawang-Yishun Bus Package, operating a fleet of MAN A22 (Euro 5) buses without such announcement systems, which indicated the unofficial discontinuation of fleet restrictions on airport bus services by the LTA.

Former Fleet Restrictions on Bus Services

The following defunct bus services operated with no double-deck or articulated buses due to the following route limitations. Non-deployment of high capacity buses on bus services due to insufficient passenger demand are excluded from the table below.

Operator Service(s) Fleet Restrictions Reasons
SBST, SMRT 39, 85, 171, 800, 804, 806, 811, 811A, 812, 851, 853, 854, 854E, 855, 856, 857, 859 Only single-decker and articulated buses allowed Low headroom in former Yishun Bus Interchange. Restrictions removed when the interchange was relocated in 2015.
SBST, SMRT 48, (66), 67, (171), 700/700A, 960, 960e Only single-decker and articulated buses allowed Low headroom along Dunearn Rd / Bt Timah Rd due to low hanging tree branches. Restrictions removed after tree pruning in 2014.
SBST 103 Only single-decker buses allowed Narrow lanes and U-turns along Piccadilly. Restrictions removed after road widening in 2015.
SBST / SMRT 145, 176 Only single-decker buses allowed Low headroom along Henderson Road due to low hanging tree branches. Restrictions removed after tree pruning in 2014.
SMRT 176, 653, 963, 963e Only single-decker and articulated buses allowed Low headroom along Hillview Rd due to former KTM railway overhead bridge. Restrictions removed after removal of overhead bridge in 2012.
SMRT 188R, 963R, RWS8, RWS88, NR1, NR6 Only single-decker and double-decker buses allowed Narrow roads in RWS Car Park for articulated buses.
GAS
 386 Only single-decker buses allowed Narrow U-turn points. along Edgefield Plains and Edgedale Plains. Restrictions removed after the opening of Punggol Nth Ave in 2023.
SMRT 920 Only single-decker and articulated buses allowed Low headroom along Saujana Rd due to low hanging tree branches. Restrictions removed after tree pruning in 2018.

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