Integrated Mobility SolutionsIntegrated Mobility Solutions

SEPAC® Local Controller Software

Giving high priority to public transportation without interrupting the general traffic flow has been a major challenge for conventional traffic control software in the past. Siemens’ SEPAC® local controller software is focused on enhancing performance of traffic signal control for customers who use Light Rail Transit, Bus Rapid Transit and regular Traffic Signal Priority functionality. Its features improve the use of low and full priority, with minimal impact on pedestrian and vehicle traffic.

SEPAC is unparalleled traffic signal priority software that enables mobility, safety and a better environment in order to improve the quality of life in cities. The software is designed for Siemens “M” series and CalTrans 2070 style controllers, as well as for ATC (Linux based) controllers. Incorporating more than 25 years of actual “on-street” traffic control experience, SEPAC is user-friendly and accommodates a large variety of traffic control requirements through its diverse configuration capabilities.

Programming Advantages

SEPAC is user-friendly with an eight line menu driven interface that accommodates a variety of traffic control features through its diverse programming. Each parameter is viewable with a menu, the cursor is movable to that parameter for changes and the software provides easy verification with related parameters that are visible simultaneously. The software offers on-screen programming area identification and editing prompts with standard traffic nomenclature used throughout. Its logically laid out programming makes setup and startup easy.



  • 16 vehicle phases

  • 8 pedestrian phases

  • 4 phase banks

  • 4 timing rings

  • 15 alternate sequences

  • 16 overlaps


  • 6 modes of coordination

  • Locally based traffic responsive routines

  • 250 events

  • 5 modes for transition

  • 3 auxiliary and  8 special functions

  • 99 day and 10 week programs

  • Free / flash / dimming

  • 16 phase function maps

Detection/ Inputs

  • 64 vehicle detectors*

  • 8 pedestrian detectors*

  • 8 system detectors*

  • Ethernet detection interface for Sensys Ethernet Access Points (optional)


  • Supports Siemens SCOOT® communication via Ethernet

  • IP / Serial / FSK communications to TACTICS®
    - IP standard on “M” series and 2070 1-B, 1-C, and 1-E cards (2009 TEES)

Priority and Preemption

  • 6 preempts

  • 6 LRT / TSP (high / low) priority routines

  • 4 priority banks with unique timing

  • Allows for 24 specific actions

  • 6 detectors per approach

  • 19 vehicles tracked simultaneously

  • Up to six directions at one time

  • Tracks vehicles at any distance from intersection using up to 6 inbound detectors and one exit detector

  • Allows for seamless operation between transit and vehicle traffic

  • Adjusts splits, skips phases when necessary, and adjusts lead/lag in order to make the transitions between normal operation and priority service more fluid

  • Low and high priority can be used for both bus and light rail vehicles


  • Collision avoidance routines (Red Protect)

  • Available when used with a speed detector

  • Bike timing with specific times for large bike traffic areas

  • Any detector can be used for bike detection

  • Advanced and delayed WALK operation

  • Advance Warning Flasher functions

  • SPaT output for Connected Vehicle® operations

  • Logging and diagnostics, including: cycling, coordination, preemption, detection, outputs, alarms and communications

  • Anti-Backup (yellow trap avoidance)

  • Password protection

  • Unit to Unit transfer

  • External back-up - USB or DataKey®

  • Help screen

  • Illinois Rail Road security available

  • International timing

  • Extensive reporting capabilities

    * 80 total detectors defaulted to listed configuration but can be programmed as different types, if necessary.
    ** SEPAC has been developed to be used in combination with SEMARC (Master Controller Software) in the same controller, eliminating the need for two controllers in one cabinet.

09/04/2012 | Author: Name

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