Three systems of toll roads exist: open (with mainline barrier toll plazas); closed (with entry / exit tolls) and open road (no toll booths,
only electronic toll collection gantries at entrances and exits, or at strategic locations on the mainline of the road).
Even if you buy the
electronic cash from the state, the state knows
only that at the beginning of the month a certain amount of money was purchased to be used for
tolls — not which tollbooths were used.