A system for on-line property prediction for hot rolled coils in a hot strip mill of a steel plant, including a unit for capturing the chemistry from the steel making stage and providing the data on rolling schedule. The multi-core holey fiber comprises a plurality of cores arranged separately from each other, and a cladding surrounding the plurality of cores wherein the cladding has plurality of holes arranged in a triangular lattice shape to create hole layers around the plurality of cores. The third group optical system includes a triplet lens formed with a negative lens, a positive lens, and a negative lens. The vehicle detector circuit detects a vehicle as it approaches the cycle or pedestrian and emits a detection signal.