A research of Bangladesh University of Engineering and Technology (Buet) has identified 219 "black spots" on ten major highways where every year hundreds of people die in frequent accidents due to engineering and design faults. These spots are located on Dhaka-Chittagong, Dhaka-Sylhet, Dhaka-Mymensingh, Dhaka-Tangail-Jamalpur, Dhaka-Aricha, Nagarbari-Banglabandha, Nagarbari-Rajshahi, Daulatdia-Jhenidah-Khulna, Dhaka-Mawa-Barisal highways and Jamuna Bridge Approach Road. Most of the "black spots" fall in intersections, roundabouts, junctions and turnings on the highways. The Accident Research Institute (ARI) of Buet has also found that the faults occur as the responsible authorities don't follow the rules of road safety audit during road construction. As many as 2,349 people were killed in 2,515 accidents at those spots from 1998 to 2007.