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Link Summary Screen The main screen (see Figure below) contains a listing of each link comprising the network.



To add a link to the network, press the 'Add Link' button. This will load the Link Data screen (as shown below).

Select the link type - Entry - Connector - Exit



The upstream and downstream node number fields will initially be populated with values, as follows: - Entry Link: the upstream node number will be +1 greater than the currently largest entry node number (e.g., 701 -> 702). The downstream node number will be +1 greater than the currently largest connector node number (e.g., 1 -> 2). - Connector Link: the upstream node number will be +1, and the downstream node number +2, greater than the currently largest connector node number. - Exit Link: the upstream node number will be +1 greater than the currently largest connector node number (e.g., 2 -> 3). The downstream node number will be +1 greater than the currently largest exit node number (e.g., 801 -> 802).

The inputs on this screen include:
 * Free-flow speed, in ft/s
 * Straight or curved link. If it is a curved link, control point (a point in between the link start and end points that affect the amount of curvature of the link) coordinates need to be specified as well as the turning direction.
 * Upstream/downstream connecting link ID's
 * An example of how to specify this coding can be found here.
 * Lane data, as outlined below
 * Note that the length and orientation angle (link to graphic) of the link is calculated from the node positions.

The orientation angle and grade inputs are described here.

Lane Data

Connecting Lanes

This dialog is used to specify the upstream and downstream connecting ID's for each lane. An example of how to specify this coding can be found here.



Lane Types
 * Regular
 * Turnbay Left
 * Turnbay Right
 * Acceleration
 * Deceleration
 * Auxiliary
 * Median

Lane Turn Movements
 * Through Only
 * Right Only
 * Left Only
 * Through + Right
 * Through + Left
 * Left + Right
 * Through + Right + Left

Detectors





Control Points





Traffic Data

Traffic data is entered for entry links. The applicable links have a yellow-colored 'Edit' traffic data button. This button loads the following input screen.



In this screen, the entry flow rate and fleet type percentages are input. To save your inputs before exiting the input screen, press the “Save Changes” button. Values from the fleet percentages table can be copied from one input screen to another by selecting “Copy Values to Clipboard” in one screen and selecting “Paste Values from Clipboard” in another.