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There are two types of toll collection systems available.
These are:
(i) Open Toll System, and
(ii) Closed Toll System.
In an open toll system, not all patrons are charged a toll.
In such a system, the toll plaza is generally located at the edge of the urban
area, where a majority of long distance travelers are committed to the facility,
with a minimum likelihood of switching to the parallel free route, or at the
busiest section of the toll way [2].
Patrons are identified by their category and pay a fixed toll for it.
The local traffic around the plaza either gets rebate or can use a service lane.
The general layout of an open toll collecting system is highlighted in
Fig. 1.
Figure 1:
Open Toll System
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In a closed toll system, patrons pay the toll based on miles of travel on the
facility and category of vehicle.
There are no free-rides.
In a closed toll system, plazas are located at all the entry and exit points,
with the patron receiving a ticket upon entering the system.
Upon exiting, patron surrenders the ticket to the collector and is charged a
prescribed fee based on category of vehicle and distance travelled [2].
It has just two stops for the vehicles whereas open system can have multiple
stops.
But closed system is expensive to construct than open system.
The general layout of an open toll collecting system is highlighted in
Fig. 2.
Figure 2:
Closed Toll System
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