Selection of system integrator for supply, installation, integration, testing, commissioning and operation & maintenance of electronic toll collection (etc) system including medium speed weigh-in-motion (mswim) and static weigh bridge (swb) system (a) at toll plaza rosera-baheri-singhia road near bariyahi ghat-2 lane bridge over river kareh in dist. darbhanga in the state of bihar. (b) at toll plaza near h.l. r.c.c. bridge on bishunpur atarwel road over arai river in the district of darbhanga in the state of bihar (c) at toll plaza near baluaha ghat 2 lane bridge over river koshi in dist. saharsa in the state of bihar