Signs are installed at hazardous road sections according to information provided in the maintenance plan.
Signs are in the correct location; the distance from the start of the hazardous stretch must be assessed according to the road features and speed limits, and as provided in the maintenance plan.
SPECIFIC MAINTENANCE TASKS
Clean the signs. Repair or replace when damage is detected.
Add relevant complementary information for drivers about the length of the hazard stretch. After reevaluation of AVC hazard risk, signs which no longer indicate the correct location of the hazardous stretch should be removed and/or relocated.
To increase driver awareness, consider changing standard signs to temporal ones where AVC hazard shows a marked temporal variation, increasing during specific times of the year.
When temporal warning signs have dynamic enhancing devices (e.g. sensors and flashing lights), ensure all these electronics function appropriately.
Where wildlife awareness signs are painted on the tarmac to reinforce driver awareness, periodically repaint them.
Minimum: once a year, check structural condition and clean.
Corrections to the locations of signs must be planned every 5 years, after a re-evaluation of AVC risk and identification of any hotspot stretches.
Temporal signs, when present, must be put into operation just before the critical period according to species involved. Adjust schedule plan in accordance to periodical analyses of AVC risks.
Maintenance of ecological assets on transport linear infrastructure