Taxis are the most widely available public transport within Gangtok. Most of the residents stay within a few kilometres of the town centre and many have their own vehicles such as two-wheelers and cars. The share of personal vehicles and taxis combined is 98% of Gangtok's total vehicles, a high percentage when compared to other Indian cities. City buses comprise less than one percent of vehicles. Those travelling longer distances generally make use of share-jeeps, a kind of public taxis. Four wheel drives are used to easily navigate the steep slopes of the roads. The long cable car with three stops connects lower Gangtok suburbs with Sikkim Legislative assembly in central Gangtok and the upper suburbs.

Gangtok is connected to the rest of India by an all-weather metalled highway, National Highway 31A, which links Gangtok to Siliguri, located away in the neighbouring state of West Bengal. The highway also provides a link to the neighbouring hill station towns of Darjeeling and Kalimpong, which are the nearest urban areas. Regular jeep, van, and bus services link these towns to Gangtok. Gangtok is a linear city that has developed along the arterial roads, especially National Highway 31A. Most of the road length in Gangtok, is of two lane undivided carriageway with footpath on one side of the road and drain on the other. The steep gradient of the different road stretches coupled with a spiral road configuration constrain the smooth flow of vehicular as well as pedestrian traffic. The nearest railhead connected to the rest of India is the station of New Jalpaiguri, a suburb of Siliguri, situated away from Gangtok. The closest airport is Bagdogra Airport, from Siliguri. Although Gangtok does not have an airport, it is linked to Bagdogra airport via a daily helicopter service.

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