Early systems
The earliest vehicle tracking systems started with the advent of two way radios. With a radio in each vehicle and a base station, fleet operators could talk to their drivers and map their progress through each day?s route. Changes and emergent calls could be sent out to the field more easily, making operations more efficient.
The downside, of course, is that radio communications had limitations in distance, accuracy, and the ability to connect with drivers going in and out of their vehicle. The information received at the base station was only as good as what the drivers provided, and for fleets of any significant size, tracking and mapping progress manually was a challenge.
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