Rajasthan in seed spices. Rajasthan government had initiated olive cultivation with technical support from Israel.The current production of olives in the state is around 100–110 tonnes annually. Rajasthan is India's second largest producer of milk. Rajasthan has 13800 dairy co-operative societies. Rajasthan is connected by many national highways. Most renowned being NH 8, which is India's first 4–8 lane highway. Rajasthan also has an inter-city surface transport system both in terms of railways and bus network. All chief cities are connected by air, rail and road. There are six main airports at Rajasthan – Jaipur International Airport, Jodhpur Airport, Udaipur Airport
Jaipur–Ahmedabad line Jaipur–Ahmedabad line The Jaipur–Ahmedabad line connects Jaipur, the capital of Rajasthan to Ahmedabad, the largest city of Gujarat in India. Swarna Jayanti Rajdhani Express is the fastest train in this route. Rajputana State Railway opened the Delhi-Bandikui wide metre gauge line in 1874, extended it to Ajmer in 1875 and to Ahmedabad in 1881. The Delhi-Ajmer metre gauge line was converted to wide broad gauge in 1994. The Ahmedabad-Ajmer sector was fully converted to broad gauge in 1997. Railway electrification work is in the process in the Rewari-Alwar-Bandikui-Jaipur-Palanpur-Ahmedabad sector. Jaipur and Ahmedabad on this line, are amongst the top hundred