PROBLEM – CLOGGED V-DRAINS

Summary: Risk of slippery, losing control and colliding

Risk Assessment: Medium Risk (Severity: Serious, Frequency: Occasional)

The v-drains along this section of the road were observed to be clogged by fallen rocks, debris, leaves, etc. This has a potential of causing water to flow into the roadway and in that the presence of water in a road layer reduces the bearing capacity of the road and in doing so it also reduces its lifetime. Drainage systems performing properly are also very important to eliminate the resultant of potholes.

Recommendation

Constant clearing of the v-drains should be undertaken in order to prevent water running through the roadway and thereby creating aquaplaning.

Road Safety Appraisal Report, Provincial Road 15-1

Table 5: Level of Risk

The main items raised in this Appraisal are summarised in Table 5, below.

Road Safety Appraisal Report, Provincial Road 15-1