Vasai is a city in Western India.
You can get into Vasai either by railway route or the road. If you are travelling from Mumbai / Thane you would have to take the Western Railway route via Dadar / Andheri and board a Virar bound local train. Road access to Vasai from Mumbai would be pretty simple once you take on the Western Express Highway and drive straight into the Gujrat-Ahmedabad Highway. It takes approximately one hour drive from Borivali up to Vasai. Persons commuting from Thane or Vashi can take the Ghodbunder road to join the Gujrat-Ahmedabad Highway. Vasai is around 40 km from Thane. People staying at Kalyan/Dombivali can take the Bhiwandi bypass and take the Anjoor phata route at Bhiwandi and head straight down to the Gujrat Ahmedabad Highway. Someone traveling from Nasik to Vasai has two options. You could take up the Wada-Jawar route coming up from Trambakeshwar and enter Vasai by joining Gujrat-Ahmedbad Highway. The second option is to take the Kasara route and then join the Nasik Highway - Ghodbunder - Gujarat Ahmedabad Highway route.