Incessant rainfall in the State Capital for the last two days coupled with the Central Board of Secondary Education (CBSE) examinations and inadequate management by the police caused traffic congestion on several busy roads of Dehradun on Monday, the first working day of the week.Traffic congestion was witnessed at Rispana Bridge, Dharmpur, Survey Chowk, Dilaram Chowk, Clock Tower, Ballupur, Saharapur Chowk, Shimla bypass, EC Road, Chakrata Road and other places in the city.