Yes, there is a wide 4 lane road which runs along outside PF1 (Old MG line). You can directly reach Island Platforms 5 & 6 by any vehicle. Just to remind that to reach on any of the island platforms, you will first have to go upstairs to enter the station building (which is on the first floor), and then proceed downwards on the platform. And there are no lifts till now. You have to climb at least 25-35 stairs.