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Mr. Steve Fitzsimons Page 4 November 5, 1996 specific time periods and locations). The name we propose for this module is "Traffic Database," which supersedes "COUNTS." Traffic Database is the common link between different signal systems; in this project, Traffic Database is the common link between Type 170, Econolite and Traconex systems. The input data translation need is only between CT Net and Traffic Database, Econolite Zone Master IV and Traffic Database, and TraconeVMAQS and Traffic Database. Output translation need is from the signal settings editor and each of these systems. It is this commonality of Traffic Database that will allow TIS to access three different systems from one computer, at least for input and analysis and monitoring. Control, however, will always reside in the signal system software, not TIS. This means that the signal settings editor of TIS will translate TIS edited output to CT Net, Econolite Zone Master IV/I'MS, or Traconet. It is then the function of CT Net, Econolite Zone Master IV/I'MS or Traconet to download the edited signal settings to the field masters and intersection controllers. 2. Modelling and Timing Plan Generation Module: The data generated in the Data Acquisition and Compiling Module are then translated into input for Synchro (which can then be directly linked to produce TRANSYT 7F and PASSER 2 input data). Also, in this module are databases with files of stored system configuration information as well as editors for development of new system configurations as other systems are added to the central system monitor. There is a difference between developing a standard system input file for TRANSYT 7F and this module. This module also provides for a means of defining a new system in terms of which loops are related to specific movements at an intersection and links in a TRANSYT 7F model (and also, as seen in Figure 1, is an input to the data extraction and compiling program in Traffic Database). The translation program takes the Traffic Database information and assigns it to the input fields in the Synchro software. Once Synchro input data are complete, the model can be nun for timing analysis, and when desired, new timing plan generation. Timing plan generation takes the "controller settings" output from TRANSYT 7F or "Pin Settings" from PASSER and converts those outputs into the specific format needed by the signal system software. This output is then capable of being directly downloaded via the central signal system software, or first, manually edited and checked prior to downloading.