McTrans Center - Highway Capacity Software

HCS+T7F Release 5.4

... has been released and is available as a patch download on the HCS+ Downloads page.

The following new features are now included in HCS+:

Interchanges:

The Interchages module has been updated to implement the Single-Point Urban Interchange (SPUI) type, added to the other seven interchange (diamond and partial cloverleaf) types already analyzed. The analysis is based on the procedures for signalized intersections, but adds several components to account for the unique relationship between signals controlling the ramps at interchanges as shown below.

Turn Radius: Adjusts saturation flow rate for the effects of turning movement geometry on vehicle headway.

Lane Utilization: Adjusts the saturation flow rate for uneven lane distribution due to downstream turn proportions.

Downstream Queue: Provides for additional lost time caused by the blocking of upstream movements by the queue.

Demand Starvation: Provides for additional lost time created when signal timing inhibits the downstream demand.

Traffic Pressure: Adjusts the saturation flow rate for the reduction in headway created with higher demand flows.

The measures of effectiveness are computed for the various origin-destination (O-D) pairs to completely describe operations through both intersections. Level of Service (LOS) is provided for each O-D and is based on control delay in seconds per vehicle (like in Signalized Intersections), but with modified LOS thresholds to account for the vehicle traveling through two intersections. There are also two additional provisions for LOS F. If either the volume-to-capacity ratio or the queue storage ratio exceeds 1.0, the LOS is F.

HCS+Interchanges files can be imported into TRANSYT-7F for generating TSIS-CORSIM* files for one-touch animation.

DAITA:

The DAITA program received significant changes to better accommodate collecting demand data for oversaturated signalized intersections, included the ability to record end-of-period residual queues for translating into turning movement demand arrival flows.

Help:

The Help system was converted to HTML for added functionality, compatibility with Windows Vista, and a separate Users Guide for each module.

TRANSYT-7F:

TRANSYT-7F, now version 11.3, is integrated with HCS+ to provide seamless access to the profession’s most powerful signal timing optimization in HCS+T7F. This new combined software package provides for advanced signal timing optimization for intersections, arterials or networks, including one-touch animation through TSIS-CORSIM*. Details of the features contained in the new Release 11.3 of TRANSYT-7F can be accessed at: TRANSYT-7F

*Animation requires TSIS-CORSIM, which is sold separately.

Catalog:

Click here for pricing, a complete description and to order.

HCS+T7F is an office license with agency licenses available.

Discounts are available for qualified academic purchases.