Concrete bridge in Northern IrelandLydon et al. equipped a reinforced concrete bridge in Loughbrickland, Northern Ireland with FBG sensors (10 mm length) to monitor deterioration of the structure, weigh individual vehicles and detect ov. Concrete bridge in Northern IrelandLydon et al. equipped a reinforced concrete bridge in Loughbrickland, Northern Ireland with FBG sensors (10 mm length) to monitor deterioration of the structure, weigh individual vehicles and detect overweight vehicles (see Fig. 5). The authors suggest that placing the sensors underneath the bridge is a better solution then placing them on the road pavement in terms of longevity and portability of the system. Their finite element analysis (FEA) showed that an overloaded 6 axle truck prod. Steel girder bridge in LaGrange, GeorgiaIn a recent work, Oskoui presented a weigh-in-motion (WIM) system on a four-span steel girder bridge in LaGrange, Ge. Road surface in Riga, LatviaGrakovski et al. [24, 25] placed fiber optic cables by Sensor Line in 30 mm wide gaps on the surface of the road in Riga, Latvia. The gaps were filled with resilient rubber afterward to complete the installation. This is illustrated in Fig. 15. They used a loaded truck with speed ranging from 10 to 90 km/h. The field trials showed that the wheel size, wheel pressure and speed changed the force applied to the ground due to inertia properties. They estimated the wheel footprint (area of the whe. Concrete road in Otsego, MinnesotaAl-Tarawneh presented a proof of concept for traffic monitoring using FBGs at a research facility in Otsego, Minnesota. Th. Test road in the UKHall and Minto propose to utilize the existing spare roadside fiber optic cables as distributed acoustic sensors with minimal overhead. Their preliminary tests indicate that cars can be detected up to 30 m offset from the road. Although the best results are obtained when the offset distances are shorter than 10 m. The recommended burial depth for cables is between 10 cm and 50 cm. The spatial resolution of their distributed sensor is 10 m. They suggest two separate roadside cables on eac. Iron mine in Ma'anshan, ChinaSimilar to, Liu et al. also propose to use distributed acoustic sensing to monitor the vibrations from the vehicles. They carrie.