Expressways must have at least four lanes with maximum speed of 120km per hour as well as rest stops and emergency stopping lanes.
This was stated in the Ministry of Transport’s 06/2024/TT-BGTVT dated March 31, 2024, promulgating national technical regulations QCVN 115:2024/BGTVT on expressways.
According to the circular that will take effect on October 1 this year, construction works associated with expressways will include a center for traffic management and operation, rest stop station, non-stop automatic toll collection system, vehicle weighing station, and protective barrier.
Along expressways, different sections can have different maximum speeds, but two consecutive sections must not differ by more than 20km per hour and the minimum lane width should be at least 3.50m.
As for emergency stopping lanes, the minimum width should be at least 2.5m, says the circular.