the trend, which was confirmed by household travel surveys (EMDs) in most major cities, including Lille, Lyon and … Strasbourg, and later by the National Transport and Travel Survey (ENTD), which shows that the trend can be attributed primarily …

all modes added together, which has shown a similar trend though with some doubts about how international air travel …, but some of the possible changes in trend seem to go back ten or twenty years, with signs detectable even longer… …