ISMA TRAFFIC SIGNAL TECHNICIAN II LATEST VERSIONS 2024 (VERSION A AND B) COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS

What year where solid state electronic controllers developed to replace the electro-mechanical controllers? - ANSWERS,1970's What two improvements differentiated electronic controllers from electro-mechanical controllers? - ANSWERS,More dependable Added many more features What was the standardization that primarily established a pin configuration in the controller and defined a function for every pin? - ANSWERS,NEMA TS-1 The NEMA TS-1 has three connectors which where known as: - ANSWERS,A,B, and C connectors NEMA TS-1 had how many connectors? - ANSWERS,Three The NEMA TS-1 defined every pin for each connector as either what two connection types? - ANSWERS,Input or Output NEMA also allowed manufactures to add an additional feature on the fourth connector. What was this connector know as? - ANSWERS,D connector What was the D connector commonly used for? - ANSWERS,Communications Pre-emption Other special features What three agencies joined together to help develop the 170 controller? - ANSWERS,California DOT City of Los Angeles California New York State DOT What controller is an open-architecture based general purpose microcomputer for traffic control? - ANSWERS,Model 170 controller What two specifications does the model 170 controller require? - ANSWERS,A specific hardware architecture A specific processor How is the Type 179 controller specification similar to the 170 specification?(2) - ANSWERS,Open architecture Allows for interchangeability of components What is the primary difference between the 179 and 170 controller - ANSWERS,Uses a different microprocessor Who developed the model 2070 controller? - ANSWERS,CALTRANS The 2070 was introduced to supersede which controller? - ANSWERS,The 170 controller Which controller is compatible regardless of the manufacturer? - ANSWERS,The 2070 controller The 2070 provides more functionality than the 170 because of what features?(3) - ANSWERS,Additional processing power Ability to program in higher level languages Multiple high speed communications ports Define the acronym NTCIP - ANSWERS,National Transportation Communications for Intelligent transportation systems Protocol What is a set of standards established by the consortium for controllers, cabinets and other ITS devices? - ANSWERS,The NTCIP The National Transportation Communication for ITS protocol was developed to accommodate what two things? - ANSWERS,Needs of subsystems User Services Traffic signal supports and the signal indications and signs that are attached to them should be periodically reviewed to ensure what? - ANSWERS,That they are performing the function that they were installed to do. Safety of what two entities is the first concern when performing maintenance on traffic signal supports? - ANSWERS,Worker