Given is a table comparing adults’ average annual travel distance across 7 types of transportations: walking, bike, car, motorcycle, bus, train and taxi.
Looking from an overall perspective, over the 30 years span from 1997 to 2007, it is readily apparent that while the distances of more than a half of the transportations witnessed a decline, the distances of cars, train and taxi shown an upward trend, with car always led the way.
Commencing with transportations lost its popularity, it was bus that declined the most sharply, from 800 kilometers(km) in 1977 to 500 km in 2007. The remains also showed downward trends, while walking declined from 400 km in 1977 to 300 km in 2009, bicycle and motorcycle witnessed maginal decreases, respectively from 100 km to 80 km and 100 km to 90 km.
On the contrary, car and taxi went up dramaticaly during the given period in question. Car, always the commonly-used vehicle among adults, more than doubled from 3500 miles to 7100 km. Taxi, ranked third at first, increased fourfold in 2007. In terms of train, albeit its upward trend, it was less pronounced comparing to car and taxi, which only rosed from 900 km to 1000 km.