An extensive road network covers the entire state. A number of National Highways and State Highways crisscross the land. One can also approach the state from neighbouring states, namely Bihar, Orissa and Jharkhand. Cross border road transportation is also operational with neighbouring countries like Nepal, Bhutan and Bangladesh. The highways connecting various cities and towns of West Bengal are as follows:
National Highways (NH) - 2, 6, 31A, 31C, 31D, 32, 35, 41, 55, 60, 80, 81
State Highways (SH) - 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 10A, 11, 12, 12A

Tourist destination in West Bengal are very well connected to Kolkata by Bus.  Buses ply regularly from Dharmatala/ Esplanade bus stand of Kolkata.

Calcutta State Transport Corporation (CSTC), South Bengal State Transport Corporation (SBSTC), North Bengal State Transport Corporation (NBSTC) buses ply regulary covering all the tourist destination offering luxury A/C bus services.

In addition to the various options of road transport discussed here, there are private bus and cab operators providing either online or telephonic reservation services. More information can be had on these by visiting the following links:

• Royal Cruiser
• Jai Dada
• Kolkata Cabs
• Mega Cabs

Darjeeling is easily accessible through a wide network of buses from Kolkata. Regular buses connect the town to Siliguri, Bagdogra (90 km), New Jalpaiguri (80 km), Kalimpong (51 km) .

Bus services can be availed from Siliguri to Darjeeling, Mirik and Kalimpong from Tenzing Norgay Bus Terminus, Siliguri. However, it is more convenient to travel in smaller vehicles which are available on seat sharing basis/hire, from near the Bus terminus, airport and railway station. The fare per passenger on a seat sharing basis from Siliguri to Darjeeling is less than Rs 100.

Siliguri is the gateway to the Dooars. Cooch Behar being the headquarters of the North Bengal State Transport Corporation, the place is well connected by long distance bus routes to Siliguri as well as to Kolkata, Jalpaiguri and other areas of the state. 

State owned buses connect nearest cities with Santiniketan. Many tourist service providers arrange package tours by A/C deluxe buses to Santiniketan from Kolkata.

Digha is 185 km away and conveniently connected via a road network with Kolkata. 

Frequent Bus services to Digha are available daily, every half an hour, from from Kolkata. Buses leave from the Shahid Minar and Howrah bus terminus in Central Calcutta, bus terminus (Route 6) in the Garia suburb. The average travel time on direct bus services from Calcutta to Digha is five hours. West Bengal Tourism and private operators also run luxury buses to Digha.

Buses ply frequently from Kolkata (i.e. from Shahid Minar, Ultadanga etc) to Berhampore. Most of the North Bengal bound buses have a halt at Berhampore. Tourist taxis, hired cars, auto-rickshaws are available from Berhampore to visit the tourist spots at Murshidabad town.

The Sunderbans is only accessible by waterways. Road transportation is available from Kolkata for Namkhana (105 km), Sonakhali (100 km), Raidighi (76 km), Canning (64 km), and Najat (92 km), which are all near the Sunderbans and have access to the riverine waterways.

For Bakkhali
Take the road through Diamond Harbour and Kakdwip to Namkhana, where the car or bus has to be transported across the Hatania-Doania creek in a special ferry. The ferry service is available from 7am to 11pm except from 12 noon till 1:45pm (lunch hour). An indicative fare for crossing a Car/Jeep is approx Rs 200 (including loading/unloading).

There is an excellent road from Namkhana to Bakkhali. The road journey from the fringe of Calcutta to Bakkhali takes about   3 ½ Hrs. West Bengal Surface Transport Corporation runs a direct bus service from Esplanade to Bakkhali.

For Gangasagar
Board a Kakdwip-bound bus from Esplanade to Harwood Point, a three hour ride. Cross the river Muriganga by boat and reach Kachuberia. From Kachuberia a bus will take you to Sagardwip (30kms) within an hour. Minibus and hired cars are available for the journey. It would take five hours to reach the island from Kolkata. As an alternative you can take a bus to Namkhana from Kolkata to Namkhana (105) kms. From Namkhana you can reach Chemaguri across the river Muriganga by launch and from Chamaguri to Gangasagar by bus (10kms.) Boats from Harwood Point and Kachuberia are available every hour.