Urbanisation has been a problem for the Hills District. Suburbs such as Rouse Hill are gradually becoming urbanised as a result of new house vacancies, resulting in a substantial influx of people. The Rouse Hill Town Centre, Rouse Hill Metro and other stations in the Hills District will attract more people due to its vicinity and convenience.

Ultimately, other problems will arise such as an increase in vehicles on roads and congestion, high energy consumption, environmental pollution and carbon emissions and increased demands for goods and services. These will all be influential factors impacting transport by overcrowding buses and stations, forcing more buses on roads and the implementation of more railway trains being scheduled.

Traffic and congestion are underlying factors of delays. The density of vehicles on roads significantly impacts the efficiency of buses and ultimately impacts commuters on board. Primarily, delays are influenced by heavy traffic. The purpose of buses is to reduce the number of vehicles on roads by enabling commuters to utilise its services on a single vehicle. Similarly, the increase in population ultimately influences the amount of vehicles confined on roads. As a result, roads will overflow with vehicles, outnumbering bus services and causing time-costly delays.