Instruments and Systems: Monitoring, Control, and Diagnostics Annotation << Back Investigation of the Induction Loop of Registration of Passing Motor Transport, Established in the Road Covering D.A. BRIZGALIN, O.I. ELFIMOVA, V.K. MIKHAILOV, A.A. SHILIN The article presents the results of a study of an oscillatory circuit with an annular multiturn coil simulating an induction loop placed in the road surface in order to register passing motor transport. The results of an experimental study of various substrates and permissible vertical distances to induction loops on the resonant characteristics of the circuit are presented. Keywords: inductance, inductive loop, road armature, oscillatory contour, resonance, attenuation. DOI: 10.25791/pribor.1.2025.1549 Pp. 01-08.