| Level of severity | Extent of damage (default values) | What it looks like | Road user perception | Type of works required |
|
Severity 1 |
Less than 2cm |  |
Speed adjusted, possibly over safe speed, to minimize vibration | Grading |
|
Severity 2 |
From 2 to 5 cm | Speed increased if possible to minimize vibration | Gravel resurfacing | |
|
Severity 3 |
Over 5 cm | Severe vibration. Speed must be reduced significantly | Regravelling |
Indicators for assessing severity of potholes
| Level of severity | Extent of damage (default values) | What it looks like | Road user perception | Type of works required |
|
Severity 1 |
Small number and small size | Perceptible to the road user. Speed reduced to anticipate and negotiate them | gravel resurfacing and local compacting | |
|
Severity 2 |
Large number or large size | Speed reduced significantly when negotiating them | Spot regravelling | |
|
Severity 3 |
Road surface almost covered | Road users pass at walking pace or not at all | Spot regravelling or local reconstruction |
Indicators for assessing severity of longitudinal gullies
re
Indicators for assessing severity of lateral gullies
| Level of severity | Extent of damage (default values) | What it looks like | Road user perception | Type of works required |
|
Severity 1 |
na | Vehicle must slow down significantly | ||
|
Severity 2 |
na | Vehicle must be slowed to walking pace | ||
|
Severity 3 |
na | Vehicle stopped to inspect whether or not gully can be crossed |
Indicators for assessing severity of mud damage
| Level of severity | Extent of damage (default values) | What it looks like | Road user perception | Type of works required |
|
Severity 1 |
Can be crossed by conventional vehicle | |||
|
Severity 2 |
Can be crossed using all-wheel drive | |||
|
Severity 3 |
Road closed or close to it |
Indicators for assessing severity of dust problems
| Level of severity | Extent of damage (default values) | What it looks like | Motor vehicle user perception | Type of works required |
|
Severity 1 |
Close windows to overtake | |||
|
Severity 2 |
Overtaking unsafe | |||
|
Severity 3 |
