traffic control system software

Helps ease traffic congestion Easily deployed and maintained Low cost design Makes use of existing detection Works with existing closed-loop systems Operates in real time Does not require calibration PDF Data Sheet PDF Specification PDF Functional Description DESCRIPTION ACS Lite is an arterial-based adaptive control software application that has been developed for use with on-street master systems under contract to the FHWA Research, Development and Technology Traffic Operations program. The ACS Lite software resides on a field hardened CPU that is typically located with the field master controller (ASC/2M), and is designed to adapt the splits and offsets of signal control patterns/plans in an ASC/2M controlled closed-loop system. Changes to cycle time are handled on a time-of-day schedule or traffic responsive plan selection basis just like traditional traffic control systems. At each optimization step, which occurs about every 10 minutes, the ACS Lite system changes the splits and offsets by small increments (e.g. 2-5 seconds) to accommodate changes in traffic flows. Initial field testing of ACS Lite has shown 5-25% improvement in arterial travel times, significant reduction in stops, and 5%-50% improvements in delays at side streets and left turns. The ACS Lite approach to adaptive control has been designed to provide a significant amount of benefit for a minimum amount of agency investment in additional infrastructure, training, and maintenance by using stop bar and advanced detection commonly found at fully actuated intersections.

Helps ease traffic congestion