This category of those road maintenance activities where the occurrences of which are difficult to predict or not within the control of the company, but which have an immediate effect on road maintenance and therefore have to be dealt with without delay.
Landslide
Flooding
The collapse of culverts, drainage, embankment and slope structures
Closure of roads due to spillage of chemicals, hazardous, toxic or inflammable materials
Closure of roads due to fallen trees
Clearing the potential hazard to the users
Clearing the blockage culvert as required
