Which of the following describes the impact of population density on urban transportation?

Higher population density significantly enhances the effectiveness of public transport systems. In densely populated areas, there is a greater concentration of people living and working in close proximity to each other, which leads to increased demand for public transportation services. This efficiency arises from the ability to move larger numbers of people across shorter distances more effectively.

Public transport systems thrive in such environments because they can operate more frequently and maintain a regular schedule without long, time-consuming trips. As the population density rises, transit routes can be designed to serve larger groups of people efficiently, which makes public transportation a more viable and attractive option for daily commuting. This contrasts with less dense areas, where public transport may be less practical due to longer distances and a lower number of riders.

Moreover, when public transport is effective, it can reduce reliance on private vehicles, support reduced traffic congestion, and minimize environmental impacts—all outcomes typically favored in urban planning strategies. This aligns with trends seen in many urban areas worldwide, where transit-oriented development has been prioritized to accommodate growing populations sustainably.