He also said that priority should be given to high-quality port connectivity projects and pitched for aggressive tree plantation along all highway projects.
Reviewing the progress of highway construction in the northeast, Modi said, "Road infrastructure is key to the development of a nation."
He asked officials to ensure good connectivity between the new road projects and nearby airports, a PMO statement said.
Reviewing the progress of highway construction in northeast, Modi said the agreement for seamless movement of road traffic between India, Bangladesh, Bhutan and Nepal would not only have a profound impact on the economy of the region but would also bring benefits from the environmental perspective, by reducing travel times.
Finance Minister Arun Jaitley and Road and Highways Minister Nitin Gadkari were also present on the occasion.