Transport in Chennai

 Transport in Chennai
just follow this
1. Train from other states stops at Chennai Central. Move towards main entrance. 
Opposite to main entrance, a bridge wil be ther, just a few steps on bridge, on ur left u wil find PARK TOWN railway station below the bridge, move down. 

2. take ticket to Thiruvanmiyur, board train that goes to VELACHERRY. ticket wil be around 10Rs. Its 11th stop from the Park town.

the spot u get down is also called Tidel park
It will be a elevated rail corridor, move down the station. 

3.Tidel park Bus stand is jst below the railwaystation u got down, Board the bus on the same side of road , as that of the railway station. 
Tidel Park bus stand to Karapakam, any bus tat goes to Siruseri, Kelambakam, Pondichery (thru OMR) . Beter cnfirm and take. Time from ther will be 15 to 30 mins. Take WHITE BOARD sevices, it will only stop close to TCS Karapakam, 

I suggested Train+Bus, becos most of the bus services from Central railway station will be Deluxe,Express or AC, it wont stop in TCS Karapakam stop, u have to get down in next stop and walk 15mins towards TCS Karapakam . there are more white board services from Tidel Park towards TCS karapakam