What is the difference between active and passive?
Active, or real-time GPS, means you can request and receive location data from your GPS receiver while your vehicle is on the road. Passive, or non real-time GPS, means your GPS receiver stores all location information for you to access at a later time. Normally, a passive receiver transmits this data at the end of the day, when your vehicle returns to your yard. With a passive system, you get all of the same information as the active system, but in a different time frame.
