Low-Voltage Advanced Traffic Control Cabinets

Assessing energy savings and other advantages of LV-ATCCs

MARIETTA, Ga. (Oct 2, 2019) — Much of Bill Diong's research experience and interests are in the broad area of power and energy; in particular, electric transportation, energy harvesting systems, solar and wind energy systems, fuel cell systems and distributed generation systems.

Bill DiongIn 2018, Diong, professor of electrical engineering in KSU's Southern Polytechnic College of Engineering and Engineering Technology, received funding from McCain, Inc. and Schneider Electric USA, Inc. to perform a study on assessing energy savings and other advantages of low-voltage traffic signal cabinets. 

This study focuses on McCain's new low-voltage advanced traffic control cabinet (LV-ATCC) which includes a Schneider Electric battery backup system (BBS). By having almost all of its electronics operate at a low voltage of 48V, the cabinet is expected to consume substantially less energy compared to existing high-voltage traffic control cabinets with a BBS. In addition, it is anticipated that personnel safety during maintenance (and repair) work will be enhanced.

With the support of Cobb County’s Department of Transportation, Diong is collecting energy consumption data from an existing high-voltage traffic control cabinet with BBS (see figures below), with the same data to be collected soon from a drop-in replacement LV-ATCC. In addition, maintenance (and repair) details are being carefully documented.

Traffic Signal Cabinet

Figure 1 (above) shows an existing high-voltage traffic control cabinet in Cobb County. 

            Traffic Signal Cabinet

Diong explained that the collected information will be analyzed in due time to determine more accurately the extent of the increase in energy efficiency and the safety improvement achieved, under real-world conditions, to determine if LV-ATCCs should be used in place of high-voltage traffic control cabinets.

Furthermore, since there are about 9,000 traffic intersection signal systems in the state of Georgia alone, the potential total energy savings is substantial he said.


Figure 2 (left) shows the interior of an existing high-voltage traffic control cabinet displaying the electronics with BBS.