*Article* **On BRT Spread around the World: Analysis of Some Particular Cities**

**Salvatore Trubia 1 , Alessandro Severino 2, \*, Salvatore Curto 1 , Fabio Arena <sup>1</sup> and Giovanni Pau 1**


Received: 31 August 2020; Accepted: 22 September 2020; Published: 20 October 2020

**Abstract:** The goal of civil engineering has always been the research and implementation of methods, technologies, and infrastructures to improve the community's quality of life. One of the branches of civil engineering that has the strongest effect on progress is transport. The quality of transport has a profound economic and social impact on our communities regarding trade (freight transport) and city livability (public transport systems). However, innovation is not the only way to improve the features above-mentioned, especially public transport, considering that it is usually beneficial to enhance and repurpose vehicles with appropriate adjustments to offer more efficient services. Other perspectives that influence public transport systems are the costs and times of design and construction, maintenance, operating costs, and environmental impact, especially concerning CO<sup>2</sup> emissions. Considering these issues, among the various types of existing public transport systems, those of the so-called Bus Rapid Transit (BRT) offer worthwhile results. The BRT system is a type of public road transport operated by bus on reserved lanes, and it is significantly profitable, especially from an economic point of view, in areas where there are existing bus routes. Nonetheless, for the construction of works minimization, it is closely linked to other features that improve its usefulness, depending on the vehicles' quality such as capacity, but above all, the propulsion or driving autonomy that would guarantee high efficiency. This paper introduces an analysis of some BRT systems operating worldwide, presenting the background, general technical features, and the correlation with autonomous vehicles.

**Keywords:** BRT; mass transit; autonomous vehicles; public transport; smart city
