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Track circuits are a system of train detection that relies upon the two rails forming a pair of electrical conductors along a designated section of railway. A power source (often a battery) is provided at one end and an electrical detector (often a relay) is provided at the other end. When the section of track is unoccupied the detector is energised. When the section of track becomes occupied by a train the wheels and axles short circuit the power source hence de-energising the detector, indicating the presence of a train. In order to increase safety, track circuits are often interlinked with the levers in a signal box, preventing a signalman from accidentally moving points underneath a train, or permitting two trains to be signalled towards each other.

Track circuits are installed at a number of stations on the SVR, specifically [[Bridgnorth]], [[Arley]], [[Bewdley]], and [[Kidderminster]]. Additionally, there is continuous track circuiting between [[Bewdley South signal box]] and Kidderminster, allowing the section to be operated by [[Acceptance Lever]].