I had done several rounds between Kolkata and Siliguri (actually Bagdogra) between 2012 and 2014 by road in my Zen Estillo and Dzire.
I used to start at 4 am in the morning and reach Bagdogra around 6/ 7 pm. Everytime, I travelled with my wife and twin sons, who are now 7 years old.
My last trip was in the month of May 2014 and then I relocated to Pune. The route I always taken was Kolkata - Krishnanagar - Bahrampur - Malda - Raiganj - Dalkhola - Islampur - Bagdogra and same route for returning. Total 550 km one side. Details are as follows:
1. Kolkata (Narendrapur) start early at 4 am. Stopped at Krishnanagar, Pantatirtha, around 6 - 6:30 for refreshment. Different road condition during different time of year. Last time during May 2014, some patch work was done, hence road was free from any potholes. Single road for two way traffic so be cautious of some local rough ambassadors and other vehicles plying between Krishnagar and Kolkata / Barasat.
2. 7 am - start from Krishnanagar. Reach Bahrampur WBTDC Guest House and Restaurant (on the left hand in NH34 in Bahrampur) around 9:30 am for breakfast. Four Lane road work on progress. On several stretches, four lane work is completed so you can easily cruise around 100 KMH. Bottleneck at Palashi village, it will eat up your considerable time.
3. Around 10:15 a.m. - start from Bahrampur, cross Malda around 12:30. You may have a short and quick tea break at roadside dhaba at Farakka or Malda. Again four lane road work is completed in some patches between Baharmapur to Farakka so comfortable ride. Between Farakka to Malada, 30 km drive is horrible as road condition is very bad. Kaliachak is major bottleneck and ready for some criss-cross driving if you want to save time. In Umarpur, four lane work is completed so you can now cross Umarpur at 80 KMH speed.
4. Stop at Raiganj for Lunch around 2:30 pm. Road condition between Malda to Raiganj is not good and you cannot cross 80 KMH due to two way traffic. Certain patches are very bad due to pot holes and rough road;
5. Around 4:30 - reach Dalkhola. Horrible road condition between Raiganj and Dalkhola. Two way traffic and pot holes, one need to very careful while managing potholes as well as incoming traffic. You can have a short tea break.
6. From Dalkhola - Toll road till Bagdogra is excellent and one can cover 120 km easily within 1.5 hours. By 7 pm, you are in Bagdogra and by 7:30 - 8 enter Siliguri.
Total stops - 4. Total time taken - 15 hours. Total fuel around 40 litres considering 15 km of average millage.
Same route for return. Return journey will stretch for another 2 - 3 hours as during evening traffic at Krishnagar, Barasat and Kolkata outer is too bad. Crossing Barasat and entering Kolkata will only take around 1.5 to 2 hours.
West Bengal roads are not as much good as we have in North, South or in Western India. Plus public events such as political rallies, Weekly Bazars, marriage possession or religious possessions are common issues in West Bengal Highways, so one need to take all this in mind while going out for a long drive in West Bengal. You will get good food in most of the Dhabas and restaurants all along the highway so food is not an issue. Careful with local three wheelers, ambassador cars and buses. They drive as they own the road. Most of the route are two way traffic so be careful. Any route query in the road, please ask a truck driver, they are quite cooperative compare to other people in road.
Language not a problem on WB roads. Non-bengali's can manage in Hindi. Due to two way traffic in single lane, lots of accidents can be seen in route generally caused due to reckless driving.
Driving during rainy season in this route is not advisable till four lane road work is completed. Road condition deteriorates at its best during rains and there is no proper maintenance of roads. State Government claims maintenance of highways are Central Government's responsibility and Central Government replies NHA already in job, but NHA is only doing four lanning work. Four Lane road work will take minimum next 7 - 8 years to complete as in many parts land acquisition is still an issue. Thanks for WB politics!
Amyth