Defining decision model for managed lane facilities

The decision model determines the actual probability that a vehicle uses the managed lane. This depends on the current utility of the managed lane.

The managed lane’s utility U is calculated according to the following formula:

U(Toll) = Cost coefficient ● Toll rate + Time coefficient ● Time gain + Base utility

Thereby the time gain is the difference between the travel time on the general purpose route and the travel time on the managed lane determined during the last update interval.

The utility of the general purpose route is always zero, since there is neither a toll, nor time gain when compared to itself:

U(general purpose) = 0

The probability of deciding to use the managed lane is calculated according to a Logit model, which applies the following equation:

 

1.  On the Traffic menu, click > Managed Lanes Facilities.

The Managed Lanes Facilities list opens.

2.  Select the required managed lane facility from the left list.

3.  On the list toolbar, in the Relations list, click > Decision models.

4.  Right-click the row header in the right-hand list.

5.  On the shortcut menu, click Add.

A new row with default data is inserted.

Note: In lists, you can use the  Attribute selection icon to show and hide attribute values (Selecting attributes and subattributes for columns of a list).

6.  Make the desired changes (Defining managed lane facilities).

The data is allocated.