Tire and pavement wear interaction monitoring for road performance indicators/Rehvide ja teekatte kulumise jalgimine teehoiu tulemusnaitajate susteemis

The design, building and maintenance of national roads constitute a substantial part of the government budget. Taking into account the magnitude and importance of these investments, the expedience, efficiency and sustainability of roads are of great public interest and their performance should be measured. For performance assessment of roads or road sections it is important to gather data about different key performance indicators. Flexible pavements deteriorate under traffic loads and climate effects. This effect depends on the technology and materials of the road, but the greatest effects depend on traffic loads and volumes. Systems can be developed to give information about tire wearing and its impact on the pavement wearing. To ensure traffic safety, especially in countries with cold climate, it is very important to gather continuously data about tire tread wear. New technologies have made it possible to integrate the measuring of tire tread wear and tire type on roads continuously and present new opportunities to monitor and analyse conditions of tires. This paper is part of a road performance measurement system presenting a concept for input data collecting. Key words: pavement wear, tire wear, sensors, road performance measurement. Investeeringud teehoidu on vaga mahukad ja neid rahastatakse enamasti riigieelarvest. Selleks et kontrollida vahendite kasutamise otstarbekust ja olla veendunud valitud konstruktsiooniliste lahenduste oigsuses, peab olema valja tootatud vastav tulemusnaitajate susteem. Susteemi sisenditeks saavad olla ainult tapsed ja pidevalt moodetavad andmed, mida tee elutsukli jooksul kogutakse, analuusitakse ning sustematiseeritakse. Kaesolevas artiklis on autorid esitanud tehnilise lahenduse kontseptsiooni, kus tees asuva anduri abil jalgitakse erinevaid teekatte kulumist pohjustavaid tegureid: liiklussagedust, soidukite teljekoormusi ja temperatuuri. Uuenduslik on, et sama seadme abil jalgitakse ka rehvide kulumist. See on saanud voimalikuks tanu tehnoloogia arengule, mille tulemusena on rehvimustri sugavuse mootmine teostatav liikuvate soidukite puhul. Edaspidi peaks rehvimustri kulumise mootmine toimuma rehvides asuvate RFID-kiipide abil, mis teavitavad aegsasti autojuhte rehvide kulumisest. See on oluline, kuna paljud riigid peavad uheks liiklusonnetuste peamiseks pohjustajaks kulunud rehve, eriti kriitiline on rehvide nouetele vastavus talviste teeolude korral. Vastav info edastatakse ka liiklusohutuse eest vastutavatele instit