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3206 Tower Oaks Boulevard <br />Rockville, Maryland 20852, USA <br />Tel: + 1 301 468 5568 <br />Fax: +1 301 816 1884 <br />June 17, 2008 <br />Mr. Vinh Nguyen <br />City of Santa Ana <br />Public Works Agency, 4th Floor <br />20 Civic Center Plaza <br />Santa Ana, California 92701 <br />RE: Santa Ana Adaptive Downtown Traffic Signal <br />Pricing Information for Phase IV Enhancements <br />Dear Vinh: <br />As per our 6/11/2008 conference call, I have revised the earlier cost proposal dated <br />6/9/2008. <br />This revised cost proposal includes the following features and services to support the <br />City's Phase IV enhancements: <br />1. Modify existing central system map display capability <br />2. Monitor all VMS 330 intersections under MIST® <br />1. MIST®Map Enhancements <br />TFI will modify MIST®software to provide capability to decouple MIST maps from the <br />main GUI. This capability will provide flexibility in monitoring the adaptive network <br />operation in a much more enhanced mode. It will allow the operator(s) to drag a specific <br />map window from the central system main GUI to a second monitor, thereby providing a <br />more focused view of a specific area during congestion and/or incident situations. <br />2. Monitoring VMS330 Intersections under MIST® <br />As part of data exchange between Intertie agencies including the City of Costa Mesa, it <br />is expected that the neighboring cities to be able to monitor operation of the signals <br />anywhere within that region. The City of Costa Mesa has already brought up all of its <br />110 VMS330 intersections under their MIST central system, making it available to Santa <br />Ana MIST to monitor those intersections. The city of Santa Ana also has started such <br />movement and included 18 intersections out of approximately 240 intersections available <br />for monitoring. This task will expand the VMS330 monitoring network under MIST by <br />adding all of the remaining intersections to this network. This approach will require <br />purchasing acity-wide license from IDI for the NTCIP Proxy software that facilitates <br />communications between the VMS330 and the MIST system. The City will import all of <br />the intersection maps as well as update the MIST database. <br />Table 1 below provides detailed cost items for the above tasks <br />EXHIBIT A-1 <br />25Q-5 <br />