India, Feb. 6 -- The Capital witnessed heavy traffic congestion across several key corridors on Thursday evening, with commuters taking to social media to flag hour-long delays, non-functional traffic signals and absence of traffic personnel at busy intersections.

Traffic police said an event at Bharat Mandapam, wedding rush and India Art Fair underway at the NSIC Grounds led to the congestion.

Many tagged Delhi Traffic Police complaining of gridlocks from Okhla flyover to Kalkaji Temple flyover, Nehru Place flyover to Modi Mill, Greater Kailash, and prolonged stoppages near Eros Hotel. One of the commuters said a stretch, barely one kilometre long, took over an hour to cross.

Another reported being stuck at a red light for one hour du...