HCS2000^TM

      HCS2000  Patch A (9/15/01)

The first patch for HCS2000 includes the following new features and corrections in this new version:

• A Two-Lane Highways module for Windows, implementing the procedures in HCM2000 Chapter 20, was added.
  
• Signal Timing Estimation (via SOAP2K) is now available for traffic-actuated signals.Note: This methodology estimates actuated phase lengths, implementing the procedures from HCM2000 Chapter 16, Appendix B, and does not optimize timing for minimum delay. Please refer to the Frequently Asked Questions and/or the Signals Help for more information.
  
• In the Signals module, additional Formatted Report options were added for Short (One-Page Summary), Long (Input, Volume/Saturation Flow & Capacity/LOS) and Full (All Worksheets) report combinations; Supplemental Left-Turn Worksheet calculations were modified to correct some problems with shared lanes under protected-permitted phasing; Back of Queue computations were corrected, related to the queue progression factor and protected-permitted phasing; and de facto left-turn lane designations and calculations were corrected.
  
• In the Unsignal Module, the Quick Entry screen was modified to correct an error with certain southbound exclusive and shared lane configurations, and the Text Report was modified to correct an error in reporting certain exclusive and shared lane configurations.
  
• In the Freeways module, certain limits on flow rates and densities are now enforced for LOS F situations.
  
• In the Ramps module, corrections to the V12 equation selection were made for certain data sets.
  
  (Click here to go to the HCS Downloads page.)