Strange bus operation

RSKeisuke SG

I withheld the bus service number and route just in case this will get anyone into trouble.

I recently travelled on a SBS Transit bus about 9.50 to 10pm in the night. Everything was normal until halfway thru the ride, the bus captain began to remove the service number board and continue to drive on its designated route, but only allowing passengers to alight.

I did not feel anything wrong with the bus mechanically.

Is this normal ops?

ifish SG

wad bus?

SBS9546J SG

zzzzz…this will not get anybody into trouble.zzzzzz

sBs_boy SG

OCC instructed the BC to do that. It usually happens when the bus is way behind time. After all passengers alighted, the bus will go off service.

RSKeisuke SG

ok in that case, it's svc 89. bc removed service number board along loyang ave towards pasir ris.

how does the occ pass the instruction to the bc?

btw, these 89 service interval really bad, erractic and long.

SBS1985C SG

There is a on board radio on the bus.

sBs_boy SG

Theres actually a communication system onboard the bus whereby the BC could communicate with the Control Center. In the case of what you had experienced, the control Center monitors the bus and found it to be behind time. Thus the instruction to go off-service.

I guess you must understand that for Svc 89, the main demand for that service are those workers working inside the Changi Cargo Complex and along the Loyang Industrial Estate. Thus, you may find very good frequency during MOrning peak and evening peak and very bad frequency during off-peak hours. I would actually suggest you to use the iris system to check the next bus time arrival for Svc 89.

I hope it might help..
Cheers

BusSpeeder SG

there is a radio on SBST buses where, if needed, is used to convey messages, important one that is. in this case, the OCC will just transmit the message to the bus and the BC will know what to do.

Scania SG

Erm, its not a radio. radios were used about 10+ years back. Its using a GPS technology called VLS and trhey name their system AVMS. Oracle was involved in the testing of the AVMS system. amdep services were the first to trial the AVMS system. There is a total of 3 different AVMS consoles (including the current one).

sBs_boy SG

Walkie-Talkie to be exact. It was a trial back then. Seems that the plan failed from what i see. Drivers abuse the system back then by communicating with fellow drivers while driving.

tintinspartan SG

Well, you know the additional piece of instrument which was installed at the driver dashboard quite close to the ez-link fare card control? I think that’s how they instruct the BC. SMRT is a different story. I think each BC is given a handphone to call OCC in case of emergency. So old-fashioned in BC-to-OCC communication for SMRT.

sBs_boy SG

Both Companies uses the SAME system. Whereby instructions are given through the speaker and drivers speak to OCC through the Mike.

Scania SG

AVMS: Driver can communicate to OCC through the AVMS-DDU. AVMS DDU also shows how early or late is the bus. The information displayed on the screen does not take up much of the screen as the DDU is meant for something else, which may remain as an unknown until any press release or observations have been made.

iBos: Driver can communicate to OCC just by pressing a button on the IDFC. The driver can check whether he or she is late through the IDFC (though I haven't seen this yet).

Both systems are based on GPS and allow the OCC to know where the bus is.

off_service SG

The AVMS DDU also shows if the doors are opened or closed.

Raraken SG

This is how WDL Checkpoint drivers know if they need to reroute or not. If there is a jam, they can communicate with the Control Center.