2 1 Road
2+1 road is a specific category of three-lane road, consisting of two lanes in one direction and one lane in the other, alternating every few kilometres, and usually separated with a steel cable barrier. The second lane allows faster-moving traffic to overtake slower vehicles at regular intervals. Traditional roads of at least width can be converted to 2+1 roads and reach near-motorway safety levels at a much lower cost than an actual conversion to motorway or dual carriageway. Sometimes, during freeway reconstruction, a barrier transfer machine will be used on one half of the freeway while the other is being reconstructed. By country Canada In 2023 the province of Ontario announced an assessment and design contract was awarded to convert Ontario Highway 11, Highway 11 north of North_Bay,_Ontario, North Bay to a 2+1 design; once the design has been finalized there will be a invitation to tender, tender to build it. Estonia The construction of 2+1 roads in Estonia first s ...
[...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]