new delhi after a delay of almost two years the intelligent signalling system iss has become operational on three intersections at pushp vihar pushpa bhawan and krishi vihar on the pilot bus rapid transit brt corridor the rest of the stretch up to moolchand will be equipped with the technology by june this is the capitals first tryst with intelligent signals but commuters using the stretch still find themselves getting caught in endless jams the traffic police say that treating only the brief stretch is not going to help contain the congestionintelligent signals have been installed at three intersections and are in the process of being installed at andrews ganj crossing the entire stretch including press enclave ambedkar nagar siri fort chirag dilli and moolchand crossings will be covered by june this year said a senior transport department officialall the signals connected to the iss are synchronized with each other with the signal cycle green time given to each arm of an intersection computed automatically by a computerized system to do this the system takes inputs from a vehicledetection system installed at an intersection and assesses traffic volume on each arm of the crossing according priority to the arm that has the maximum number of vehicles waiting on it if there are no vehicles on a particular arm the signal on that side does not turn green as it does with normal signals that particular side will stay red and the time saved will be distributed among the other arms in this way signal cycles will be shortened and vehicles will be processed fasterbut in keeping with the brt mandate the signal system has been designed to accord priority to buses the signalling software has already been fed with data on the passenger load of buses as well as other modes of motorized transport based on that it will calculate the number of people waiting in the bus lane no of buses x no of passengers and in the motor vehicle lane same formula if it is found that the number of people waiting in the bus lane is more than in the motor vehicle lane the system will clear the bus lane first the official explained the iss control room has come up at transport department spv special purpose vehicle delhi integrated multimodal transit system dimts which is executing the projectintelligent signals were proposed as a solution to the traffic jams and long waiting times commuters came up against at intersections on the pilot brt corridor between ambedkar nagar and moolchand when trial runs started on the stretch in april 2008 they were hit by massive traffic snarls with waiting times at some intersections like chirag dilli siri fort and pushp vihar even going up to 40 minutes during peak hours the transport department had then proposed installation of iss at all intersections on the stretchbut the traffic police are sceptical about the efficacy of installing iss on only a small stretch intelligent signalling is