Q-Free Traffic Signal and Corridor Management
Q-Free Traffic Signal and Corridor Management

ATC Controllers

Advanced traffic signal controllers for powerful intersection control. Meet edge computing and IOT demands at the roadside.

  • Fast, reliable intersection control
  • Schedule updates or run live
  • Install updates without putting the intersection in flash


Traffic signal controllers are the workhouse of signalized intersections. Based on open standards and built on a Linux platform, Q-Free ATC controllers (advanced transportation controllers) are ideal for traffic signal operations and set the scene for the connected world.

ATC controllers have an open architecture platform that organizes and improves traffic signal operations. Leveraging the ATC API, our ATC controllers support multiple applications on the same device. This improves app integration and reduces the amount of equipment in traffic control cabinets.

ATC controller models

Our traffic signal controllers meet or exceed US-based Caltrans (2070) and NEMA specifications. Each ATC controller comes standard with 120 VAC power. However, 220 VAC and 48 VDC are available to meet alternate power requirements.

Every Q-Free ATC Controller comes standard with:

  • On-board web server
  • Linux operating system
  • Unrestricted use license for NTCIP MIBs for Q-Free’s MAXTIME ic
  • Powerful CPU with expandable memory configurations
  • ATC application programming interface

Just looking to replace parts or upgrade your existing 2070 controllers? Check out our available 2070 controller modules.

ATC 2070 Controllers

2070LX Controller2070LDX ControllerX3c Controller
(H x W x D)
7” x 19” x 12”
17.75 x 48.25 x 30.5cm
7” x 19” x 12”
17.75 x 48.25 x 30.5cm
X3 Type 1
7.5” x 14.25” x 8
19 x 36.25 x 20.5cm

X3 Type 2
10.25” x 14.25” x 8”
26x 36.25 x 20.5cm
Form Factor:19″ rack mount19″ rack mount19″ rack mount
Display:8 line x 40 character LCD display16 line x 40 character LCD display1280 x 720 resolution color touch-screen

ATC NEMA Controllers + Specialty

CBX ControllerXN NEMA Controller
(H x W x D)
7.0″ x 12.8″ x 10.5″
17.7 x 32.4 x 26.7 cm
Type 1:
Rack Mount
7” x 18.8” x 7.8”
17.8 x 47.8 x 19.8 cm

Shelf Mount
7” x 13.4” x 7.8”
17.8 x 34 x 19.8 cm

Type 2:
Shelf Mount
10.3” x 13.4” x 8.5”
26.2 x 34 x 21.6 cm
Form Factor:Shelf or 14″ rack mountShelf or 19″ rack mount
Display:16 line x 40 character LCD display128 x 256 pixels OLED display

Optimize functionality by pairing with a Q-Free ATC Cabinet.

Request more information

Product specifications may change at any time without notice and may not be available in all markets. Contact us for up-to-date information and availability.

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