Operations

The table below lists levels of service for operations.
Operations
Component
Desirable Level
Acceptable Level
Tolerable Level
Safety Appurtenances
Includes guardrail, crash attenuators, concrete median barriers, driveway culvert safety end treatment, etc.
Maintain all safety appurtenances to original design standards; all hardware functional; no noticeable appearance defects.
Maintain all safety appurtenances to original design standards; all hardware functional; few noticeable appearance defects.
Maintain all safety appurtenances to original design standards; all hardware functional; readily noticeable appearance defects.
Illumination
90% of luminaries operating in each system; hardware functional and neat in appearance; no rust on poles or anchor bolts; no broken transformer bases; no covers missing.
80% of luminaries operating in each system; hardware functional and neat in appearance with few noticeable defects; no rust on poles or anchor bolts; no broken transformer bases; no covers missing.
70% of luminaries operating in each system; hardware functional and neat in appearance with readily noticeable defects; some rust on poles; no rust on anchor bolts; no broken transformer bases; no covers missing.
Traffic Signals
Maintain signal heads in proper alignment; no burned out bulbs; hardware functional and neat in appearance; no rust on poles; efficient timing; no unnecessary vehicle delay.
Maintain signal heads in proper alignment; no burned out bulbs; hardware functional with few noticeable appearance defects; no rust on poles; minimal unnecessary vehicle delay.
Maintain signal heads in proper alignment; no burned out bulbs; hardware functional with few noticeable appearance defects; no rust on poles; minimal unnecessary vehicle delay.
Signs
, Mailbox Supports and
Delineators
Maintain all signs to original color; excellent night visibility; none damaged or missing; posts straight and rust-free; all sign lights operational. Signs and mailboxes are on approved breakaway posts.
Maintain all signs to original color, all visible at night; posts straight with few noticeable appearance defects; most sign lights operational. Signs and mailboxes are on approved breakaway posts.
Maintain regulatory and warning signs to original color, all visible at night but from reduced distance; readily noticeable defects.
Maintain all markings to be functional day and night with no noticeable defects, or change in reflective pavement marking patterns due to missing markers.
Maintain all markings to be functional day and night; painted markings rarely show wear; no noticeable change in reflective pavement marking patterns due to missing markers.
Maintain all markings to be functional day and night; painted markings readily show wear; reflective markers still functional with pattern still apparent.