The road side data exchange device includes a positioning system for receiving satellite data regularly, a calculator for calculating a calibration value of the satellite data to generate an analyzed result data, and {HEAD ~ a database} for storing {TAIL ~ the analyzed result data} 
for storing
The road side data exchange device includes a positioning system for receiving satellite data regularly , a calculator for calculating a calibration value of the satellite data to generate an analyzed result data , and { HEAD ~ a database } for storing { TAIL ~ the analyzed result data }
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