Functional evaluation by devices measuring surface characteristics

3 FUNCTIONAL EVALUATION BY DEVICES MEASURING SURFACE CHARACTERISTICS 

The most objective assessment of functional pavement condition evaluation is conducted using purposely built devices that record the pavement s surface characteristics, in particular evenness, skid resistance and texture depth. These devices are self-mobile, mobile or portable when a short length of road pavement has to be surveyed. 

The additional advantages when using self-mobile or mobile devices are as follows much faster data collection, less traffic interruption and quicker data processing. Needless to say, the cost of mobile devices is considerably higher than that of the portable devices. 

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