EpsilonSensors were embedded inside the laboratory field, simulating the real road structure. Both longitudinal (X) and transverse (Y) sections were investigated at two levels: in the aggregate (lower) and asphalt (upper) layer. The internal nervous system allowed for detailed analysis of structural behaviour (strain distributions over the length and strain development over time) during fatigue loads (1,000,000 load cycles). Data were used for FEA validation and further optimisations.