Dadra & Nagar Haveli is well connected by road. From Mumbai take Mumbai- Ahmedabad NH 8 and drive straight to Bhilad from where you turn right to Silvassa,14 kms away. You could also take the right turn from Talasri or Vapi for Silvassa. The journey time should be just under 3 hours to cover the distance of 180 kms from Mumbai to Silvassa. Surat is 140 kmsaway and Nasik is the same - 140 kms and Ahmedabad is 375kms from Silvassa. Daman lies at a distance of 30kms from Silvassa. Share Auto rikshaws are available for local travel..
The nearest airport is Mumbai, 180 kms away which is very well connected to many cities in India and around the world. It is about 3 hours away from Silvassa, the capital of Dadra and Nagar Haveli through NH 8 by road.
The nearest railway station is at Vapi in Gujarat, which is 18 km away from Silvassa. Major Mail/Express trains available at Vapi include August Kranti Rajdhani, Satabdi, Ahinsa, Karnavati etc. The other rail head, Bhilad on the Mumbai-Ahmedabad route is 20 km but Vapi is more convenient, where road transport is easily available.
It is quite easy to rent cars, most of them are rented along with drivers. These car rentals can be easily found online, or physically at airports, railway stations, bus stands and at popular tourist destinations.