Dhaka is the slowest city in the world while the fastest city on the speed index is Flint in the US state of Michigan, according to a US-based private non-profit research organisation’s findings.

The study was done by the National Bureau of Economic Research (NBER) which covered 1,200 cities in 152 countries.

“The fastest city in the world is Flint (of Michigan) United States, with a speed index of 0.48.

The slowest is Dhaka, Bangladesh, with an index of -0.60,” read the NERB report uploaded to their website.

The NERB said all cities in Bangladesh were among the slowest 15 per cent of world cities while it listed Mymensingh and Chottogram as the ninth and 12th slowest cities across the globe.

“Most strikingly, all cities with the fastest speed or uncongested speed are in rich countries, and all the slowest cities are in poor countries,” commented the report by Cambridge, Massachusetts-based NBER.

Researchers used data from Google Maps to analyse traffic in more than 1,000 global cities with populations over 300,000.