It connects southern cities such as Kollam, Kochi, Thrissur, Palakkad, Coimbatore and Salem.
The exponential growth of service and IT-based sectors coupled with its prominence as the state capital and tourist center has strained transport infrastructure.
[4] The first phase includes 42 km of six-lane and four-lane dual carriage ways.
The Central City Bus Terminal is located at East Fort (Kizhakke kotta), near Padmanabha Swamy temple.
[6] Kaniyapuram, Murukkumpuzha, Perunguzhi, Chirayinkeezhu, Kadakkavur towards north and Balaramapuram and Neyyattinkara railway stations towards south serves the metropolitan area.
[7] Thiruvananthapuram is the first major South Indian city on the longest train route towards North in India, Kanyakumari to Jammu and Dibrugarh.
Thiruvananthapuram International Airport offers direct flights to the Middle East, Singapore, Malaysia, Maldives and Sri Lanka.
[9] The airport is approximately 3.7 kilometres (2.3 mi) due west from the city center.
[citation needed] India's first deep water Transshipment terminal Vizhinjam International Seaport Thiruvananthapuram is under construction.
The natural sea depth facilitates the maintenance of deep draft with limited dredging.