Accordingly, all newly built expressways must have at least four lanes (two for each directions) and an emergency lane along all the route.
Associated works with an expressway include a management center to control traffic for the whole route, a non-stop electronic toll collection system for tolled routes.
As to the design speed, the new standards stipulate that an expressway has three levels of 120km/hour, 100km/hour, and 80km/hour. In locations of special terrains, the allowed design speed is 60km/hour.
The Ministry of Transport said that any expressway construction projects whose investments were approved before the effective date of this Circular continue to be carried out. Currently operating expressways with a design speed of 80km/hour and below are allowed to apply technical elements to projects approved before the effective date of this Circular.
