I am a mobile security officer and I travel to different sites and i do around 120-160km per night. I DO have time between my sites to pray my fard rakats but I want know if i am I eligible to shorten my prayers even though I can pray my fard rakats fully and almost always on time.

When it comes to this answer, it's not about the distance. It's more about what is normally considered in your culture and in your land. If people consider a trip to be actual traveling, then we say you are a traveler. This means that normally, when people go to that place or go on such a trip: 1. They pack their bags 2. They say their goodbyes 3. It is clear they are traveling However, if people normally make this trip and do not consider it to be traveling (for example, if they go and return in one day normally, without thinking it is traveling or doing what a traveler does), then we do not consider this to be traveling.