The graph shows the number of car journeys into the city centre made by residents and non-residents over a ten year period. In 1996 an average of just under 10,000 journeys per day were being made by residents, while approximately half that number were made by non-residents. Over the subsequent three years, resident journeys remained reasonably stable, while non-resident journeys increased each year, exceeding 8,000 per day in 1999.

In early 2000, parking meters were introduced into the city centre, and this had the effect of virtually halving resident traffic, although non-resident traffic decreased only slightly. By the end of 2002, the number of resident journeys had not altered significantly, but non-resident journeys had risen to their 1999 level. At this point, Westgate Street and Park Lane were pedestrianised. This resulted in a dramatic decline in non-resident traffic, and a slight decrease in resident traffic. From this point onward, resident traffic remained more or less at the same level, while non-resident traffic resumed its upward trend, reaching nearly 5,000 journeys per day in 2005.

该图显示了十年来居民和非居民进入市中心的汽车旅行次数。1996年，居民平均每天的出行次数略低于10,000次，而非居民的出行次数约占一半。在随后的三年里，居民的出行量保持相当稳定，而非居民的出行量则逐年增加，在1999年超过每天8,000次。

2000年年初，市中心开始使用停车收费表，这使居民交通量几乎减少了一半，但非居民交通量仅略有下降。到2002年底，居民交通量没有明显变化，但非居民交通量已上升到1999年的水平。此时，西门大街和公园里已经实现了行人化。这导致非居民交通量急剧下降，居民交通量略有下降。从这时起，居民交通量大致保持在同一水平，而非居民交通量则恢复了上升趋势，2005年达到每天近5000次。