dynust.net

DynusT provides an array of approaches for the modeling of value pricing scenarios.  The value pricing type on a link may be link-based, e.g., toll gantry, or distance-based ($/mile). The user will input the start and end time of the link price, and the price per vehicle type (SOV, HOV and commercial truck).  Lastly, the user must specify the value of time (VoT) for SOV, HOV, and commercial truck.  With such parameters, the user has the capability to model various pricing scenarios such as high occupancy vehicle (HOV) facilities, high occupancy toll (HOT) facilities and vehicle-type restriction.  Once the simulation is complete, DynusT will output pricing revenue earned for each priced link.

DynusT has powerful functionality for modeling and evaluating large-scale evacuation, as well as modeling mechanisms to simulate specific network adaptions under evaulation-like scenarios, such as contra-flow lanes.  A unique capability in DynusT is modeling both Descriptive and Prescriptive scenarios for large-scale evacuation. 

An incident is described as a time-dependent event, such as a car accident or a temporary special event that impedes the trafficway thus causing a reduction in capacity.  The "severity" of the incident will be input by the user as the severity is the fraction of link capacity lost due to the incident.  For an active incident, DynusT will reduce the physical capacity (lane-miles) and maximum flow rate of the incident link.

A work zone is an area of a trafficway under maintenance, construction, utility-work, etc.   In DynusT, a work zone can model different closure types and configurations including "partial closure" and "crossover" work zones. In the NEXTA GUI, the work zone is demarcated by a "flagger" icon on the center of the link. The entire link length is under the given parameters of the work zone during the specified time period.

DynusT provides the ability to configure dynamic message sign (DMS), or variable message sign (VMS), information in the network model with three different types of messages informing travelers of downstream conditions. In the NEXTA GUI, a blue "VMS" sign will be posted on the link.