The given line graph illustrates the number of passenger journeys made on three different railway systems in Great Britain namely, the National Rail Network, the London Underground, and Light Rail and Metro systems from 1950 to 2004/05.
Overall, all three railway networks experienced an upward trend over the period. The National Rail Network and the London Underground followed a broadly similar pattern, while the Light Rail and Metro systems, introduced in the 1960s, remained the least-used system throughout the timeframe.
The number of journeys on the National Rail Network started at around 1,000 million in 1950. It then declined steadily, reaching its lowest point of 625 million in the early 1980s. A similar trend was observed for the London Underground, which began at 710 million trips in 1950 and saw a slight decrease until the same period. At that point, both systems recorded their lowest figures, with the National Rail Network surpassing the London Underground by 130 million journeys. After this low point, both figures gradually increased until the end of the period.
In comparison, the Light Rail and Metro systems did not begin operating until the early 1960s. Initially, they served around 15 million passengers, but this figure declined and bottomed out at nearly zero in 1980. However, the number of journeys on this system gradually rose during the remaining years, reaching its highest level by 2004/05, though still significantly lower than the other two networks.