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Bus service

Bus 991B

Choa Chu Kang Int → Opp Choa Chu Kang Mkt

6 stops towards Opp Choa Chu Kang Mkt

Open bus 991B in the live app

First and last bus

From Choa Chu Kang Int towards Opp Choa Chu Kang Mkt

First bus, Mon to Fri00:17
Last bus, Mon to Fri00:55 (after midnight)
Last bus, Saturday00:55 (after midnight)
Last bus, Sunday and PH00:55 (after midnight)

Times at the first stop of each direction. Later stops are a few minutes behind. Source: LTA DataMall BusRoutes (live pull 2026-10-06). Saturday and Sunday first-bus times are not in the data we hold.

Route and stops

Direction 1: Choa Chu Kang Int to Opp Choa Chu Kang Mkt

6 stops

  1. 1Choa Chu Kang Int44009 · Choa Chu Kang Loop · Mon to Fri 00:17 to 00:55 (after midnight)
  2. 2Lot 1/Choa Chu Kang Stn44539 · Choa Chu Kang Ave 4 · Mon to Fri 00:19 to 00:57 (after midnight)
  3. 3Opp Blk 21044399 · Choa Chu Kang Dr · Mon to Fri 00:21 to 00:59 (after midnight)
  4. 4Opp Blk 20344111 · Choa Chu Kang Ave 1 · Mon to Fri 00:23 to 01:01 (after midnight)
  5. 5Opp Blk 816A44889 · Keat Hong Link
  6. 6Opp Choa Chu Kang Mkt44099 · Choa Chu Kang Ave 1

Stop activity along the route

Stop activity, all buses. LTA counts people tapping in and out at each bus stop across every service that calls there, not just bus 991B. Counts are monthly totals for September 2026.

Showing 08:00 to 08:59, weekdays. Bars are relative to the busiest stop on this route at that hour. In = tap-ins, Out = tap-outs.

Direction 1: Choa Chu Kang Int to Opp Choa Chu Kang Mkt

  1. Choa Chu Kang Int44009
    In17,612
    Out38,564
  2. Lot 1/Choa Chu Kang Stn44539
    In10,153
    Out6,964
  3. Opp Blk 21044399
    In4,038
    Out502
  4. Opp Blk 20344111
    In926
    Out255
  5. Opp Blk 816A44889
    In336
    Out211
  6. Opp Choa Chu Kang Mkt44099
    In2,992
    Out1,476

Source: LTA DataMall, passenger volume by bus stop, September 2026.