Intelligent Transportation Systems (ITS)
LLG staff has been providing Intelligent Transportation Services (ITS) for various agencies for over two decades. LLG staff are recognized experts in traffic signal controller technology and communication systems with International Municipal Signal Association (IMSA) Transportation Center System Specialist Level I, IMSA Traffic Signal Senior Field Technician Level III certifications. LLG has been retained by several agencies to implement, fine-tune, operate, monitor and troubleshoot various signal systems and ITS applications on a continual basis to the following agencies:
- City of Brea
- City of Fullerton
- City of Rancho Cucamonga
- City of Costa Mesa
- City of Cypress
- City of Dana Point
Our ITS services include:
- Network and communication development and support
- System Integration with agency central systems, design, signal timing support and implementation
- Inventory of ITS Components and Subsystems
- Infrastructure Monitoring and Operational Maintenance
- Traffic Signal Hardware and Software installation, operations and maintenance
- Implementation and Technical Oversight for Adaptive Signals
- Implementation of Traffic Management Center (TMC)
- Troubleshooting Traffic Related Equipment (Network, Controllers, and Timing)
LLG implemented the Adaptive Signal Control Technology in the City of Brea for to the Brea Place / Avalon Bay Development Project. The system was installed at 11 signalized intersections on State College Blvd (from Imperial Hwy to Lambert Rd) and Birch St (from Poplar Ave to Birch St). LLG team has been assisting the City of Brea with technical and engineering oversight for the Adaptive Traffic Control System (ATCS in maintaining the network infrastructure to achieve a reliable ATCS system.
LLG is currently implementing ITS for the UCSD campus as a part of its Long-Range Development Plan (LRDP) Improvement Program. The ITS project, which includes Adaptive Traffic Signal Control with Transit Signal Priority (TSP) includes three (3) phases comprising of installation and deployment. Phase I includes Regents Road, Phase II includes La Jolla Village Drive (west) and Phase III includes La Village Drive (east).
LLG in collaboration with San Diego State University (SDSU) STAR LAB developed a Technical Research Paper to further study the effect of the emerging Automated Vehicle (AV) technology on infrastructure standards. The main objective of this research was to evaluate implications of an innovative infrastructure solution, exclusive AV lanes, for safe and efficient integration of AVs into an existing transportation system. Examining a real-world case study, this project investigated implications of adding a narrow reversible AV exclusive lane to the existing configuration of I-15 expressway in San Diego, resulting in a 9-feet AV reversible lane, and in both directions, two 12-feet lanes for HOV and HOT vehicles. Recommendations and guidelines from the results of the study were developed that are usable for practitioners and professional organizations pertaining to AV development.
San Marcos , CA
LLG developed four traffic signal plans and signal timing plans which included Intelligent Transportation Systems (ITS) elements for key intersections associated with the new Department of Motor Vehicles (DMV) facility in the City of San Marcos. The project also included coordinating two of the traffic signals. The use of ITS features such as CCTV cameras and remote management enabled the City to easily identify issues subsequent to the opening of the DMV.