Which controller was intended to supersede the 170 controller?

The 2070 controller was designed as an advancement over the older 170 controller, incorporating enhanced capabilities and features tailored to meet the needs of modern traffic management systems. The 2070 supports more complex traffic signal control scenarios, provides improved data handling, and enables communication with other traffic management systems, thus enhancing overall traffic flow efficiency.

In comparison to its predecessor, the 170 controller, the 2070 controller also integrates more sophisticated detection and signal coordination capabilities, making it a preferred option for traffic signal control in contemporary environments. This upgrade reflects the evolution in traffic signaling technology, aiming to better manage increasing traffic volumes and complex urban environments.

Other options like the 210 and TS-1 controllers serve different roles or represent different generations of technology that do not directly replace the 170 controller. The designation of a general term like "Traffic signal controller" is too vague and does not point to a specific model that was intended to supersede the 170. Thus, the 2070 controller is clearly highlighted as the intended successor, marking its significance in traffic signal technology advancement.