TRL is a UK-based company operating within the Computers and Technology sector, specifically focusing on computer software solutions. With a workforce of 201 employees and a reported revenue of 68 million USD, TRL specializes in providing insights and tools that enhance transportation systems through technological innovation. The company has published materials that explore the concept of digital twins in transportation, highlighting their importance in creating efficient and effective transport systems. One document serves as a primer, explaining various forms of digital representations, including digital models, digital shadows, and digital twins, and their applications in the transportation sector. This primer aims to clarify common misconceptions and facilitate better understanding among innovators in the field. Another document focuses on a toolkit designed for monitoring trials of zero-emission vehicles, indicating TRL's commitment to advancing sustainable transportation solutions. Through these publications, TRL demonstrates its expertise in integrating digital technologies into transportation, contributing to the development of smarter and more sustainable transport infrastructures.