Forums Forums Traffic Signals SD/SA Detection. Reply To: SD/SA Detection.


We have three of these detectors in use as congestion detectors for part time signals where the conflict is remote to the location of the detector (HA scheme to keep a motorway slip clear). We have had less than total reliability, although things have improved recently, with some adjustment by the supplier. From this experience, I would not yet want to utilise them in a safety critical situation such as SD/SA.