Buses play a vital role in Brazil, serving not only as a means of daily transportation, but also as a working environment. This study explores the relevance of street vendors in this scenario, where they offer a diverse range of products, such as candies, popsicles, water and electronics. We investigated the growth of this practice, identifying the most demanded products, peak sales times and the increased presence of immigrant sellers. Street vendors, operating outside formality, assume a central role in the research, earning a living through commerce in public spaces. We focus on the informal bus lines 640 and 448 in Manaus (AM), using a dialectical method, direct observation and interviews for comprehensive analysis and reflection on this context. This study expands understanding of the impact of these informal workers on a dynamic urban landscape.