Tren Urbano's fleet consists of 74 Siemens , stainless steel -bodied cars , each 75 feet (23 m) long. Each vehicle carries 72 seated and 108 standing passengers. Trains have a maximum speed of 62 miles per hour (100 km/h), and average miles per hour ( km/h) including stops. All cars operate as married pairs and up to three pairs will run together at any time. Tren Urbano currently operates 15 trains during rush hours, while the remaining cars stand at the yards or serve as backup should a train experience problems. The rolling stock was assembly at Siemens plant in Sacramento, California . 
Sonia Nazario 's best-selling novel, "Enrique's Journey", also depicts the process and obstacles of train migration. While this book mainly focuses on the journey of one person, it speaks for the thousands of other migrants who have struggled to reunite with loved ones. Nazario describes the emotion and difficulty experienced by entire families who are separated by the necessity to become more economically stable. The dangers of crossing Central America and Mexico by train are described in explicit detail as migrants of all ages face street gangs, corrupt officials, hunger, exhaustion, discrimination, poor weather, and deadly trains.