Transportation planning is a collaborative process that defines future policies, investments, and spatial designs to efficiently move people and goods, integrating input from various stakeholders and adopting a multi-modal approach. Increasingly, it focuses on sustainability, using multidisciplinary strategies like behavioral psychology and urban planning to promote public transport and reduce environmental impact, as exemplified by efforts in cities like Hanoi. Historically, particularly in the UK during the 1950s and 60s, planning followed a "predict and provide" model, aiming to match road capacity with growing car ownership, a philosophy popularized by the 1963 "Traffic in Towns" publication. However, by the mid-1990s, with documents like the 1994 Planning Policy Guidance 13, the approach shifted significantly, acknowledging that unrestrained road growth was undesirable due to congestion, environmental damage, and social equity concerns, thus emphasizing integrated transport policies.