noun
A designated safe area, often in a broader sense than just traffic. Can refer to a place of safety in various contexts.
地震のときは、この公園が安全地帯になります。
In the event of an earthquake, this park becomes a safety zone.
noun
traffic island; pedestrian refuge
Specifically a raised or marked area in the middle of a road where pedestrians can wait safely.
横断歩道の真ん中に安全地帯がある。
There is a traffic island in the middle of the crosswalk.