A further set of questions was asked of people who are employed and who travel to work, including one about their usual mode(s) of transport to work.
Gofynnwyd cyfres bellach o gwestiynau i'r bobl sy'n gweithio ac sy'n teithio i'r gwaith, gan gynnwys un cwestiwn am sut y byddent yn teithio fel arfer i'r gwaith.