As far as Chennai central is concerned, traffic can be reduced to some extend by making train that comes and have loco reversal at Chennai central to skip MAS, and provide stoppage at Perambur. This will not only reduce the congestion at MAS but also reduce the time lost in loco reversal. Passengers can reach MAS, as there are many local train running between Perambur and MAS.
Similarly in case of Chennai Egmore. Southbound train can start from MS as usual, while north bound trains can start from Tambaram with stoppage at MS for 5 minutes.