Version History

HCS™ > Downloads > Version History
STREETS

  • Updates the lane utilization factor calculation for a DDI
  • Adds F1 help topics for safety and emission related optimization inputs

ROUNDABOUTS

  • Corrects the LOS threshold A for segment analysis

TWSC

  • Corrects capacity calculation for LR and LTR configuration with flared approach
  • Adds a flow balance check for RCUT and its conventional intersection
  • Corrects usages of probability of queue-free state in calculations when there is a major-street shared LT lane or a short left-turn pocket
  • Corrects the proportion of time blocked value usage for two stage crossing cases
  • Corrects the determination logic for T-intersection and related calculation
  • Changes the default value of critical headway from 0 to 2 seconds
  • Corrects the movement delay and LOS display issue for major-street right turns

FREEWAYS

  • Adds error checking and information button and popup to provide real time error checking messages
  • Implements auto segmentation to code a facility from sections
  • Allows opening and saving CSV files
  • Adds the ability to view service volume tables for single-segment analyses
  • Updates the facility graph to display colors, legends and tool tips
  • Adds new charts such as volume served, density and speed distributions
  • Implements printing all single segment reports in a facility
  • Updates the heat map report design
  • Allows print and print preview for heat map report
  • Adds converting text and formatted reports to XPS files from command line
  • Corrects weaving capacity in oversaturated calculation
  • Corrects LCRR range for two-sided weave analysis
  • Corrects equations for managed lane speed calculation and saving issue
  • Reliability Analysis: adds new charts to display speed and density distributions

SERVICE VOLUMES

  • Corrects ramp service volume calculation
  • Adds converting text and formatted reports to XPS files on command lines

MUTCD Signal Warrants

  • Replaces the old Warrants module with a completely redesigned newer version
STREETS

  • Adds a larger and direction-oriented interchange graphic as the second page to the interchanges report
  • Corrects the interchange O-D movement LOS computation for some cases by correctly applying all of the ETT, v/c > 1 and Rq > 1 conditions
  • Improves the display of text inputs on report for the inputs containing -1
  • Corrects the right-turn overlap phase display by showing it only when an exclusive right-turn lane exists
  • Removes the Heavy Vehicle Equivalency row of inputs
  • Corrects the standard deviation and 95th% confidence interval calculations in reliability analysis for multiple replication files

ROUNDABOUTS

  • Corrects the delay due to turning vehicles calculation
  • Adds command line functionality to batch process files, print text reports, update old files etc.
  • Corrects the usage of intersection/segment in text report

TWSC

  • Improves program speed and accuracy by completely revamping the internal architecture of this module
  • Expedites coding of MUT/RCUT crossover intersections by adding a checkbox to designate a crossover intersection
  • Implements and displays approach and intersection ETT and LOS calculations for RCUT intersections
  • Adds command line functionality to batch process files, print text reports, update old files etc.
  • Makes the headway and percent thrus using shared lane inputs user entered or calculated
  • Adds error checking and information button and popup to provide realtime error checking messages

AWSC

  • Displays a PHF message box on importing *.xhu files
  • Adds command line functionality to batch process files, print text reports, update old files etc.

FREEWAYS

  • Includes several improvements to the facility graph for ramp lanes, managed lanes, left-side ramps, two-sided weave etc.
  • Adds segment selection and navigation through the facility graph
  • Highlights selected segment in the facility graph
  • Updates the facility text report to show additional facility-wide outputs such as VMT, VHT and VHD
  • Adds the full view option for single-segment analyses to view inputs and report at the same time
  • Improves animation of left-side ramps and two-sided weaving segments
  • Corrects the display of number of segments in the facility text report
  • Corrects equations for Merge/Diverge analyses with more than four freeway lanes
  • Sets accel/decel lane lengths to 1500 when calculated length is larger than 1500 in Merge/Diverge
  • Reliability Analysis: Corrects calculation of incidents when using the “Calculated Crash Frequency” option
  • Reliability Analysis: Improves randomness of weather event assignment
  • Reliability Analysis: Corrects Special Event analysis and adds option for users to use a date to add a special event
  • Reliability Analysis: Replaces TTImax with TTI95 to more closely match HCM reporting guidelines

MULTILANE

  • Adds the ability to model Bicycle LOS procedure
  • Corrects the issue with remembering report zoom level

HIGHWAY SAFETY SOFTWARE (HSS)

  • Adds the Empirical Bayes (EB) analysis capability
  • Adds the ability to perform economic analysis

SERVICE VOLUMES

  • Imports data from Freeways (XUF) files to eliminate the need to code the data twice
  • Updates reports to display the full service volume tables
  • Adds the full view option to view inputs and report at the same time
STREETS

  • Adds a new heat map report
  • Adds safety and emissions based signal-timing optimization capabilities
  • Updates the Pedestrian, Bicycle and Transit procedure implementation to use the HCM6 equations
  • Allows buses to be coded with or without the presence of right-turn lanes
  • Improves the automatic refreshing of reports

ROUNDABOUTS

  • Corrects the animation issue related to certain file names

TWSC

  • Adds step-10 section to text report for all cases
  • Corrects shared capacity calculation for files with a flared lane present

AWSC

  • Corrects the issue with remembering report zoom level

FREEWAYS

  • Adds the ability to include special events in travel time reliability analysis
  • Improves the CSV file functionality
  • Allows the animation of files containing multiple segments and multiple time periods
  • Adds the ability to see detailed reports for individual segments in a facility analysis
  • Corrects the dispay of missing weaving demand data inputs for screens with low resolution
  • Displays a new segment graphic on segment details screen

MULTILANE

  • Adds the ability to model Bicycle LOS procedure
  • Corrects the issue with remembering report zoom level

HIGHWAY SAFETY SOFTWARE (HSS)

  • Adds the ability to model Freeway and Ramp safety analyses
  • Adds formatted reports
  • Implements F1 help feature

TOOLS

  • Adds a new HCS Service Volumes module
STREETS

  • Adds a new intersection summary report
  • Corrects missing timing data issue for certain uncoordinated intersection files
  • Adds the ability to model side street split phasing with right turn overlap
  • Updates the icon for the Streets Reliability module

ROUNDABOUTS

  • Adds Roundabout Segment analysis
  • Adds one-click CORSIM animation functionality

TWSC

  • Adds one-click CORSIM animation functionality
  • Corrects headway default value setting based on lane configuration

AWSC

  • Adds one-click CORSIM animation functionality

FREEWAYS

  • Implements travel time reliability for freeway facilities
  • Adds one-click CORSIM animation functionality for single-period files
  • Improves the interoperability with MS Excel thru CSV file import and export
  • Adds a new color-coded Heat Map report
  • Implements the mixed-flow model for composite grades
  • Improves the weaving segment input page

TOOLS

  • Adds a new Highway Safety Software module
STREETS

  • Adds phasing and timing summary report
  • Corrects a Lead/Lag issue for major street left turns for certain cases
  • Adds general data to text reports

ROUNDABOUTS

  • Adds fields for Passenger Car Equivalent

FREEWAYS

  • Adds cross-weaving effect for a Merge/Diverge analysis
  • Adds events and adjustment factors to Facility text report
  • Adds Proportion of Flow Outside 4th Lane field for a Merge/Diverge analysis when necessary
  • Adds range display when hovering over inputs
  • Corrects display of number of managed lanes in Facility Graphic
STREETS

  • Adds the ability to model Diverging Diamond Interchanges (DDI)
  • Adds interchange O-D graphics to the interchanges report
  • Updates the Segment Auto LOS threshold for LOS A
  • Adds the ability to export Signals and Streets multiple-period results to CSV files
  • Updates the layout of the Streets multiple-period text report
  • Adds the graphical summary to the full report

FREEWAYS

  • Adds import/export demand data features
  • Auto calculates total ramp density and interchange density for a facility
  • Adds Managed Lanes analysis for the Merge, Diverge and Weaving segments
  • Adds facility geometry graphic

STREETS

  • Adds analysis of alternative intersections (MUT, RCUT and DLT)
  • Implements travel time reliability for urban street facilities
  • Incorporates unsignalized movements into signalized intersection delay averages
  • Modifies the grade and heavy vehicle adjustments to saturation flow rate
  • Adds parking activity and calibration factor to base free-flow speed computations
  • Changes LOS A threshold in urban streets

ROUNDABOUTS

  • Updates capacity equations to reflect latest research and increased capacity for all scenarios

FREEWAYS

  • Includes completely redesigned module to provide for segment and facility analyses within the same environment
  • Adds modeling of managed lanes for continuous access, buffer and barrier designs
  • Incorporates new truck procedures
  • Adds capacity and speed adjustment factors for weather, incidents and driver population
  • Uses revised speed flow curves
  • Adds cross-weave analysis for on- and off-ramps near managed lane access points
  • Adds density computed across all lanes in merge and diverge analyses

MULTILANE

  • Includes completely redesigned module with a new user interface and modern architecture
  • Implements the expansion of free-flow speed to 65 and 70 mi/h
  • Accomodates density of 45 pc/mi/ln as the LOS E/F boundary
  • Incorporates new truck procedures

Note: HCS7 implements the sixth edition of the Highway Capacity Manual.

FACILITIES

  • Completely redesigned module with a new user interface and modern architecture

AWSC

  • Completely redesigned module with a new user interface and modern architecture
  • Three-lane approaches modeled and 95th Percentile queue results displayed

TWSC

  • Implemented Pedestrian LOS procedure
  • Added code to handle foreign cultures and language format
  • Corrected display of Flow Rate and v/c ratio for major street left turn for the left-thru shared lane cases
  • Added keyboard shortcuts for Back and Next buttons

ROUNDABOUTS

  • Added code to handle foreign cultures and language format
  • Updated Roundabouts.chm help file
  • Added keyboard shortcuts for Back and Next buttons

STREETS

  • Added a new signalized intersection graphical summary report

ROUNDABOUTS

  • Completely redesigned new user interface with two data entry modes

FACILITIES

  • Corrected a Ramp Density issue for certain datasets
  • Expanded the range allowed for ramp demand values to accommodate two-lane weaving
  • Corrected a report issue that caused segment LOS table to be empty if the file contained exactly 15 segments

TWSC

  • Removed major streets LOS from both reports
  • Made intersection delay appear as blank on the text report when the capacity/delay for an existing approach is invalid
  • Corrected approach delay calculation for LT TR configuration on minor street
  • Several minor user interface improvements and calculation corrections including shared-lane capacity calculations
  • Corrected Left-only median type operations

STREETS

  • Few minor user interface improvements

AWSC

  • Added the computation of 95th Percentile Queue by lane as prescribed in the HCM 2010

TWOLANE

  • Revised computation of capacity values when opposing flows dictate other than 1700

TWSC

  • Completely redesigned user interface with two data entry modes
  • Up to six lanes on major street now accommodated including U-turns
  • Proportion time blocked incorporated from Streets for upstream signals
  • Short lane modeling added to the Rank 1 delay computations

STREETS

  • Added a new Interchanges Text Report to show intermediate results
  • Several minor corrections including removal of a redundant File Save As dialog
  • Corrected a problem when optimizing some multiple period datasets
  • Several minor improvements including results in red when QSR exceeds 1

FACILITIES

  • Corrected a formatted report issue with weaving lane change labels
  • Updated images on Weaving Input Data screen to better reflect segment lengths

STREETS

  • Added Segment Travel Time to the Segment Results Report
  • Enabled editing red clearance and yellow time for more scenarios
  • Corrected the range for Approach Width for work zones
  • Updated the XUS file for additional outputs and improved its readability
  • Corrected issues with lane configuration, grade and lag phase coding for some data sets

QUICK STREETS

  • Added a new File Save feature
  • Improved tool tips and updated the Users Guide
  • Modified unit labels for consistency with Streets

STREETS

  • Added a Phasing Wizard button to generate a dialog for guided phase coding
  • Added a Pre-Timed Signal checkbox to define pre-timed operations with one-click
  • Implemented Closely Spaced Intersections for Interchange Ramps Terminals analysis
  • plemented adding and deleting any intersection within the urban street
  • Updated display settings to better support Windows 8 defaults
  • Implemented Saturation Flow Adjustment Factor for Work Zones
  • Updated the Turn Radius inputs to compute Turn Equivalency Factors per lane group
  • Added Quick Streets (Excel Add-in) to facilitate importing count data from other sources

FACILITIES

  • Implemented HCM update to add density criterion for LOS F to weaving segment analysis
  • Updated the startup screen to improve file access functionality
  • Fixed issue showing LOS based on density with d/c > 1 for some data sets
  • Resolved report display issue that required a user to view overall results first
  • Corrected Weaving data input screen related to Short Length and Weave Configuration

WEAVING

  • Implemented HCM update to add density criterion for LOS F to weaving segment analysis

STREETS

  • Implemented HCM 2010 Interchange Ramp Terminals (Chapter 22) procedures
  • Added Reports for Interchange Ramp Terminals and Multiple Period Analysis
  • Added pedestrian crossings and right-turn overlap phasing to Phasing View
  • Improved the Streets start-up screen and added a Video Tutorial to Help

ROUNDABOUTS

  • Added Quick Entry for graphic lane configuration coding

STREETS

  • Updated animation converter to support foreign locales

ROUNDABOUTS

  • Corrected pedestrian adjustment to capacity for two-lane approaches

TWSC

  • Reverted to version 5.6 temporarily

FACILITIES

  • Added the Quick Animation feature
  • Miscellaneous updates and corrections

STREETS

  • Implemented an HCQS change for certain permitted, shared left-turn situations
  • Added a new formatted report for access points
  • Added a peak hour factor for access points
  • Implemented the ability to hide multimodal outputs
  • Time-space diagram corrections to the slope of progression bands

ROUNDABOUTS

  • Corrected capacity computations for certain situations
  • Modified lane assignments for certain situations
  • Miscellaneous user-interface corrections

TWSC

  • Updated to add six-lane major street analysis including U-turns
SIGNALS

  • Signals analysis is now performed within the new Streets module

STREETS

    • New module
    • Coordination & access points
    • Multimodal analysis for pedestrian, bicycle and transit level of service
    • Visual mode and tabular data
    • HCM based internal genetic algorithm optimization
    • Improved shared-plus-exclusive lane handling
    • Dynamic time-space diagram
    • Flow profile diagram
    • Auto calculate and force calculate buttons to control speed of data input

TWOLANE

    • Included a PFFS (Percent Free Flow Speed) and adjusted LOS for passing lane analysis
    • Fixed passing lane values for when the passing lane becomes truncated
    • Adjusted the Access Point Density to not “correct” itself to a default value

FACILITIES

  • New module

SIGNALS

  • Improved loading and refreshing of the screen
  • Corrected reports showing single lane data in the left or right columns
  • Updated help file to be more comprehensive
  • Corrected some printing issues

ROUNDABOUTS

  • Corrected some lane configuration issues
  • Included new template file that allows animating a two-lane roundabout

WEAVING

  • Corrected saving and loading of two-sided weaving in datasets
  • Corrected weave.rpt file that had the v_RF and v_FR labels switched in the “Conversions to pc/h Under Base Conditions” portion of the Formatted Report

TWOLANE

  • Corrected capacity computations for certain situations
  • Added help file

HEAVY VEHICLES

  • Updated Trucks, Buses and RVs ranges (0% to 100% replaces 0% to 25%) for Freeways, Multilane and Ramps

Release 6.1 (04/01/11) Initial Release