The 1980s and 1990s saw a shift towards more modern and aerodynamic bus designs, driven by advances in materials science and computer-aided design. Buses became more efficient, with improved fuel economy and reduced emissions. The introduction of low-floor buses, which enabled easier boarding and accessibility, also became a standard feature. The development of BRT (Bus Rapid Transit) systems, which prioritize dedicated bus lanes and efficient boarding systems, further transformed the public bus landscape.