The link toll represents the simplest case of toll system modeling. The monetary cost of a route is obtained by summing toll amounts per link along the route.
The following applies:
|
tL = t(VolL) |
Travel time on a link L as a function of the volume |
|
VolL |
Volume of link L |
|
CL |
Toll value for using link L |
|
VT |
Value of time in [€/h], for example |
In the case of link tolls, it is not necessary to define a restricted traffic area as in the case of area tolls, for example. You simply enter the amounts as the link attribute Toll_PrTSys for the respective transport system. The time value is included as a coefficient in the impedance definition or, in the case of TRIBUT assignments, as a randomly distributed value defined in the assignment parameters.
One example of a link toll is the German HGV toll. For trucks, a toll is charged on part of the network (highways and federal roads) that is exactly proportional to the distance traveled. Thus to each link of the highway and federal road link types the product from the link length x constant km cost multiplication can be allocated as toll amount. For any other link and any other transport system, the toll amount is 0. The total of these amounts summed up along a route represents the cost resulting from the distance traveled on highway and federal road links for the transport system HGV.
