| 1. |
What is iris NextBus? |
| |
iris is the acronym for Intelligent Route
Information System. |
| |
|
| |
iris NextBus is SBS Transit's latest iris
service and it offers bus arrival time estimation on a real
time basis. You now have the convenience of knowing how many
minutes away your bus is from your bus stop or how long more
before the next bus departs from the bus interchange. |
| |
|
| 2. |
How do I access iris NextBus via sms?
|
| |
To access iris NextBus via SMS, please
key in your query in the following message format and send to
74744. |
| |
<Bus
Stop Number> space <Service Number> |
| |
|
| 3. |
What is bus stop number ? |
| |
Every bus stop in Singapore has a unique 5-digit
number. The next time you are at the bus stop, look up and spot
the number at the top of the bus stop pole. |
| |
|
| |
 |
| |
|
| |
|
| 4. |
When was iris NextBus launched? |
| |
iris NextBus was launched on 23 May 2007
via SMS and this service is exclusive to both SingTel Mobile
Postpaid & Prepaid customer only. |
| |
|
| 5. |
Is the service chargeable? |
| |
This service is chargeable at $0.05
i) For Postpaid customers, each SMS sent to 74744 will be considered
as 1 SMS.
ii) For Prepaid or store-value card customers with no FREE SMS
bundle, they will need to pay an additional $0.05 per irisNextBus
query. |
| |
|
| 6. |
Are you able to predict the arrival time of
the particular bus at a specific timing (eg. an hour later)
instead of the next bus? |
| |
iris NextBus provides real time information
on the present location of the buses. Hence, the information
provided is accurate at the time of query. Furthermore, the
travelling time of the bus is constantly changing depending
on traffic conditions, which could change within minutes. Thus,
the shorter the interval between the query time and arrival
time, the more accurate the estimation will be. |
| |
|
| 7. |
What is the degree of accuracy of iris
NextBus in terms of its arrival time estimation? |
| |
The accuracy of iris NextBus is about +3
minutes and -3 minutes. However, the travelling time of the
bus is constantly changing depending on traffic conditions,
which could change within minutes. Thus, the shorter the interval
between the query time and arrival time, the more accurate the
estimation will be. |
| |
|
| 8. |
Why is it that when I repeat my query, I sometimes
encounter a sudden drop in prediction time (eg. Next bus predicted
to arrive in 10 minutes but in 2 minutes time, the revised prediction
indicates 3 minutes)? |
| |
Sudden drops in prediction time do occur when
a bus is introduced half way on-service and this can be scheduled
to address demand over certain stretches of road or it could
be to replace a disrupted bus (eg. accident, breakdown, etc.). |
| |
|
| 9. |
Can we know if the next bus arriving is a wheelchair-accessible
bus (WAB)? |
| |
Yes. The results will indicate '(WAB)' following
the estimated time in minutes. |
| |
|
| 10. |
Can iris NextBus predict arrival times
for all bus services including non-basic services (eg. Chinatown
Direct) and for all bus stops islandwide, including bus stops
at Johor Bahru? |
| |
iris NextBus can predict arrival times
for all SBS Transit bus services everywhere except for Stadium
Direct services as they are operated as a one one-pickup point,
single-trip, single-direction adhoc service. |
| |
|
| 11. |
Is the service available to SingTel pre-paid/stored-value
card users? |
| |
Yes, besides being available to SingTel post paid
mobile users or subscribers, iris NextBus on SMS is also available
to SingTel pre-paid or stored/value card users. |
| |
|
| 12. |
What is the description in our bill when we
are charged for iris NextBus service? |
| |
It will be reflected as "iris NextBus." |
| |
|
| 13. |
Can iris NextBus predict arrival times
for all bus services including non-basic services (eg. Chinatown
Direct) and for all bus stops islandwide, including bus stops
at Johor Bahru? |
| |
It will be reflected as "iris NextBus." |
| |
iris NextBus can predict arrival times
for all SBS Transit bus services everywhere except for Stadium
Direct services as they are operated as a one one-pickup point,
single trip, single direction adhoc service. |
