Let's do a bit of statistical studies.
SGP Population; total about 5 million
About 2 million are FT population, and assuming that 90% are working and remainder are the FT's dependents. Gives about 1.8 Million people working in SGP, and must, and will take public transport to work daily.
Leaving about 3 million Singaporeans.
Estimated that only about 2/3 or 66.7% are working adults, and the rest are dependents.
Giving about 2 million working adults who are Singaporeans.
according to this article,
http://www.asiaone.com/Motoring/News/Story/A1Story20071023-31685.html dated 2007
There is at least 500,000 cars in Singapore, and most of the time, in SINGAPORE, you will find that only 1 driver, and the car is empty without passengers during rush hours... let's take an assumption of 20% Cars have at least 2 working adults going to work.
Meaning to say, at least 600,000 Singaporeans drive to work or "Tong Pang"
Taxis
http://en.wikipedia.org/wiki/Taxicabs_of_Singapore
According to the above report, there are about 24,693 of taxis in operation in Singapore, making an estimated 588,632 trips daily.
Assuming people who take taxi to work, take taxi back home.
Around 294,316 people only take taxi.
Estimated Total of People Taking Public Transports (BUS & MRT) = 1.8 Million FTs, + 2 million Singaporeans - 600,000 (with cars) - 294,316 (take taxis)
= 1.8 Million FTs + 1.105 Million Singaporeans
Ratio of FTs versus Singaporeans using the Public Transport
1.8 : 1.105
or 1.623 : 1
That is to say, for every 3 FTs taking Public Transport, there will be 2 Singaporeans taking Public Transport.
3/(2+3) X 100% = 60%
Meaning to say, there are about 60% of the people taking public transport are FTs.
Which means to say, when the interviewer interview the public, they have a 60% chance of interviewing a FOREIGNER from PRC, INDIA, Philippines etc...
So, when people say that there is 9 out of 10 being satisfied with the Public Transport, I would say that I have a 60% chance accuracy that most of the people interviewed are foreigners.
The report would be more accurate when they interview Singaporeans, perhaps the report would be 4 out of 10 being satisfied...