Method and apparatus for determining a road usage charge

A method of determining a road usage charge, comprising:

• receiving at a server from a mobile device, a first message including an indication of a first distance value of a vehicle that is associated with an account maintained by the server, wherein the first distance value indicates a first total distance driven by the vehicle at a first point in time;
• receiving at the server from the mobile device, a second message including an indication of a second distance value of the vehicle, wherein the second distance value indicates a second total distance driven by the vehicle at a second point in time;
• the server determining the first distance value from the first message and the second distance value from the second message;
• the server determining a distance traveled by the vehicle between the first point in time and the second point in time based on the first and second distance values;
• the server determining a road usage charge amount based at least in part on the distance traveled;
• and
• the server transmitting an indication of the road usage charge amount to the mobile device.