Asian Development Bank (ADB) will provide Rajasthan USD 500 million loan (about Rs 3,238 crore) in tranches to improve road transport in the state. ADB said it in an investment programme that will improve connectivity and transport efficiency of state highways.The Rajasthan State Highway Investment Programme will upgrade about 2,000 kilometres of state highways and major district roads to two-lane or intermediate-lane standards to meet national road safety requirements, ADB said in a release.“Through an approach of public-private partnerships, the investment programme will vastly improve connectivity, allowing greater access to jobs, markets, services and social opportunities in Rajasthan,” said Chen Chen, an ADB Senior Transport Specialist.