Zhubei section of National Freeway 1 backed up 8 km in both directions on Wednesday morning

Chiang Wan-an posts 'before' and 'after' images of road that depicted 'hell' for pedestrians

Authorities remove boulders and debris for partial re-opening from Sunday afternoon

Authorities recommend delaying setting off until Saturday afternoon

Freeway Bureau recommends motorists check real-time traffic conditions on its 1968 website or app