The Spanish phrase "trocas arregladas" translates into English as "trucks repaired." This phrase is a Mexican Spanish phrase, and it would only be used and understood in Mexico and areas of the United States where Mexican Spanish is spoken.
In Mexico and Mexican speaking areas of the United States, the Spanish word "troca" means "truck." However, in other Spanish speaking countries, a truck is referred to as a "camión." The Spanish word "arreglada" is the past participle of the verb "arreglar," which means "to fix," "to arrange" or "to repair." Thus, in areas inhabited by residents of Mexican origin, "trocas arregladas" means "trucks fixed" or "trucks repaired."