170 Microcomputer Special Requirements
As of July 2001, the City of Scottsdale requires the 170 microcomputer to be type 170ATC/HC11. This allows a clearly defined upgrade path to the 170ATC which meets federal advanced traffic controller requirements. Please contact CoS Traffic Operations at (480) 312-5620 or via email to Traffic Operations
for a copy of the current specification. This specification is in compliance with Oregon Department of Transportation Standard Specification for Microcomputer Traffic Signal Controller dated July 20 2000 - 170ATC and HC-11 Version. The HC11 microprocessor board shall also meet this specification. In order to meet this specification, the HC11 microprocessor board shall be interchangeable from the various manufacturers.