Traffic signals: Question 14Select one: A. Need to be designed and installed according to the required specifications, particularly locating the controller clear of roads. B. Performance analysis includes capacity evaluation, usage modelling of past flows, and assessment of alternative routes during construction. C. DPTI contracts may include the provision of traffic volumes, flow, control operational data, intercession details and existing modal data structures. D. Fall under the DPTI's responsibility and they need to ensure that module data is updated, augmented, calibrated and/or validated whenever changes are made