Main Idea of Public Transportation Improvements

Read the following passage:

"In recent years, public transportation systems across many cities have undergone significant improvements. These enhancements aim to make commuting more efficient and environmentally friendly. Increased funding has allowed for the expansion of bus routes and the introduction of newer, greener vehicles. As more people use public transport, traffic congestion decreases, leading to shorter travel times and a reduced carbon footprint. Ultimately, these advancements not only benefit individual commuters but also contribute positively to the urban landscape as a whole."