[citation needed] Approximately 465 kilometres (289 miles) in length, the highway starts at Jatrabari in Dhaka and ends at Teknaf in Cox's Bazar.

[6] Currently four lanes with an eight-lane expansion underway, the N1 is the busiest road in the country and a top development priority.

In one instance in July 2015, a truck losing one of its tyres in Comilla created a 22 kilometres (14 miles) long tailback.

[9] Reza Construction Ltd. and Sino Hydro have set temporary camps for this purpose respectively near Daudkandi and Chandina in Comilla District.

[1] After inauguration being postponed several times, the project, implemented by the Roads and Highways Department (RHD), was finally completed and opened on 2 July 2016, three years behind schedule and a full decade after the plan was approved.

[13][14] The RHD is planning to alleviate traffic congestion on the Chittagong–Cox's Bazar route by constructing bypass lanes and flyovers at five crucial points.

This initiative is prompted by the upcoming opening of the Matarbari Deep Sea Port in 2026, which is anticipated to increase traffic on the current two-lane highway.

[15] The RHD is also upgrading the Chittagong–Cox's Bazar highway to four lanes, at an initial estimated cost of ৳18000 crore (US$1.5 billion).