noun
traffic congestion relief; alleviation of congestion
Primarily used in the context of reducing traffic jams; can also refer to easing congestion in other contexts like networks or crowds.
新しいバイパスは渋滞緩和に役立っている。
The new bypass is helping to alleviate traffic congestion.
市は渋滞緩和策として公共交通機関の利用を促している。
The city is promoting public transportation as a measure to reduce congestion.
Compound of 渋滞 (traffic jam) and 緩和 (alleviation).