diff --git a/core/kt-osrd-sncf-signaling/src/main/kotlin/fr/sncf/osrd/signaling/tvm300/TVM300.kt b/core/kt-osrd-sncf-signaling/src/main/kotlin/fr/sncf/osrd/signaling/tvm300/TVM300.kt
index af85bd4dd0b..fdb8c7a563c 100644
--- a/core/kt-osrd-sncf-signaling/src/main/kotlin/fr/sncf/osrd/signaling/tvm300/TVM300.kt
+++ b/core/kt-osrd-sncf-signaling/src/main/kotlin/fr/sncf/osrd/signaling/tvm300/TVM300.kt
@@ -39,7 +39,12 @@ object TVM300 : SignalingSystemDriver {
     }
 
     override fun isConstraining(signalState: SigState, trainState: SignalingTrainState): Boolean {
-        return trainState.speed <= maxSpeedForState(signalState)
+        if (signalState.getEnum("aspect").contains("VL")) {
+            // VL should never be considered constraining,
+            // it would cause infinite loops in spacing resource generation
+            return false
+        }
+        return trainState.speed > maxSpeedForState(signalState)
     }
 
     override fun checkBlock(reporter: BlockDiagReporter, block: SigBlock) {