760-814-2260 pkohl@zwiesler.com

SBC-2400 TRIP Traffic Control Software

Powerful traffic control software for up to 8 signal groups.

Signal Groups

RowFunctionSignal Groups       

Signal Group Timings

RowFunctionFlags 1-8
1Max Recall
2Det Lock
3Veh Recall
5Ped Groups
6Ped Recall
7Flash Walk
ASch Flasher
BYel Next
CYel Fls
DGrn Fls
EYel Start
FGrn Start

Signal Group Configuration


The SBC-2400 controller with TRIP software (Traffic Responsive Interval Program) can operate up to eight signal groups. Each signal group maybe operated as a Vehicle group or as a Pedestrian group. The controller can act as either a stand-alone Time Base Controller (TBC) or as a slave controller which receives an external sync pulse. The program has a time-of-day table to select 1 of 8 traffic plans to meet nearly any traffic condition.

Easy controller programming uses the Model HHT hand-held programming unit, which is connected to the controller when needed. Please refer to the above two tables and to our detailed TRIP Software Operator’s Manual.


  • To set timing, first press F-1 on the HHT. Press cursor keys F and C to select the Signal Group 1-8, and D and A to select the function. Use the numerical keypad to enter the value for each Signal Group and Function, then press Enter. A decimal point in a cell indicates a time specified to 0.1 sec.
  • To set configuration data, press F-1 on the HHT until you read F-1-F. Press cursor keys A and D to select rows 0 through F, then set flags using the keypad.

Feature Set of SBC-2400 controller with TRIP Software

  • 8 signal groups (any can be Pedestrian group)
  • Actuated signal groups
  • Detector locking
  • Flashing walk (international standard)
  • Solid yellow on the next signal group to go green
  • Yellow flash signal groups
  • Green fast flash signal groups for green termination
  • Flashing Red start up
  • All Red start up
  • Yellow start groups
  • Green start groups
  • Associated calls
  • Group calls
  • Stop time switch
  • Flash switch
  • Manual control
  • CPU watchdog monitor with status LED.

Input Connector

  • 8 group inputs
  • Time reset
  • Manual control
  • External synchronization
  • Conflict monitor flash

Program Theory


The Interval program is based on a set of signal group intervals within a fixed cycle length. The cycle length and intervals have a range of 1-255 seconds. The cycle length is entered as the first interval time on the plan. The program cycle counter counts upwards from zero turning on each interval as it progresses. The cycle counter is shown in line 3 of the Base display of the terminal.

As the cycle counter counts up, it reaches an interval time. At that time, the program looks at the new requested signal groups and those that are already green (in service). If the same signal group is called for, it will remain green. If any signal group that is green is not requested again, it will terminate. When all terminating signal groups are out of service, the new signal groups will turn green.

Signal groups maybe semi actuated. Semi actuated signal groups will always turn green at the next interval time but then time by detector extension. If the minimum green time is complete and there is a Goto group assigned and the extension timer times out before the next interval, the Goto group will turn green once the parent group has completely terminated AND there are no other terminating groups currently timing.

Signal groups maybe fully actuated. Fully actuated signal groups will only turn green at their interval time if there is a detector call present or if another group in the interval has a call. Once green, they operate in the same manner as a semi actuated signal group.

An interval can be skipped if there are no calls on any signal group. In this case, the current interval will be skipped and the next interval will time regardless of the call status. The new interval will “Hold” until its normal interval time when the hold will drop. This allows the cycle timer to catch up to the current interval.

An interval will not be skipped if there is a call on any signal group. All groups will turn green even fully actuated groups with no detector calls. Once an actuated signal group has timed its minimum green, it operates as any semi actuated signal group.

The interval times and signal group flags make up a traffic signal plan. The plan can run Free or Coordinated by Time of Day. The program has 8 available plans and a Time of Day scheduler. The program also contains an exception day scheduler for special Holiday operation by Date.

The Interval program provides an easy to use yet powerful tool to help solve the most demanding traffic applications.

Eight programmable detector inputs are available, as is police manual control. A plug-connected 6-channel green conflict monitor (CMU) is an available option.

Because of the small physical size of the complete electronics, the controller CPU and power driver board / load switch assembly can be housed in a small-pole mounted cabinet with enough room to accommodate detectors. The SBC-2400, load switch boards, and recommended conflict monitor unit operate on 12 VDC, which can be supplied by the same off-the-shelf 12 VDC switching power supply or by solar panels.

Cost-Effective Traffic Control Solutions for International Markets

6919 Wildrose Terrace
Carlsbad, CA 92011

Tel: 01 760-814-2260