|
Overturn | Roadside features
Inadequate shoulder
Pavement feature
| Determine sideslope
Investigate recovery
zone
Determine shoulder
dimensions
and composition
Check for shoulder
dropoffs
Check for potholes
and rutting
Check for water ponding | Provide traversable culvert
end treatments
Extend culverts
Install/improve traffic barriers
Flatten slopes and ditches
Relocate drainage facilities
Upgrade shoulder surface
Remove curbing/obstructions
Widen lane/shoulder
Eliminate edge dropoff
Improve superelevation/crown |
| Fixed object |
Obstruction in or too
close to roadway
Inadequate lighting
Inadequate pavement markings
Inadequate
signs, delineators and guardrails
Inadequate road design
Slippery surface | Field observation
to locate
obstructions
Check illumination
Review pavement markings
Review signs, delineators
and guardrails
Check roadside shoulders
and maintenance
Check superelevation
Perform ball-bank study
Check skid resistance
Check for adequate
drainage
Perform spot speed study | Delineation/reflectorize
safety
hardware
Remove/relocate obstacles
Install breakaway features
to
light poles, signposts, etc.
Protect objects with guardrail
Install crash cushions
Improve roadway lighting
Install reflectorized
pavement lines/raised markers
Install reflectorized paint and/or reflectors
on the fixed object
Add special signing
Upgrade barrier system
Install warning signs/delineators
Improve alignment/grade
Provide proper
superelevation
Provide wider lanes
Reduce speed limit if
justified by
spot speed study
Provide adequate drainage
Improve skid
resistance |
