diff --git a/core/src/main/kotlin/fr/sncf/osrd/stdcm/graph/EngineeringAllowanceManager.kt b/core/src/main/kotlin/fr/sncf/osrd/stdcm/graph/EngineeringAllowanceManager.kt
index 88458dbd489..dc68eea38dc 100644
--- a/core/src/main/kotlin/fr/sncf/osrd/stdcm/graph/EngineeringAllowanceManager.kt
+++ b/core/src/main/kotlin/fr/sncf/osrd/stdcm/graph/EngineeringAllowanceManager.kt
@@ -7,6 +7,7 @@ import fr.sncf.osrd.envelope.part.EnvelopePart
 import fr.sncf.osrd.envelope.part.EnvelopePartBuilder
 import fr.sncf.osrd.envelope.part.constraints.EnvelopeConstraint
 import fr.sncf.osrd.envelope.part.constraints.EnvelopePartConstraintType
+import fr.sncf.osrd.envelope.part.constraints.PositionConstraint
 import fr.sncf.osrd.envelope.part.constraints.SpeedConstraint
 import fr.sncf.osrd.envelope_sim.EnvelopeProfile
 import fr.sncf.osrd.envelope_sim.overlays.EnvelopeAcceleration
@@ -117,7 +118,7 @@ class EngineeringAllowanceManager(private val graph: STDCMGraph) {
                 ConstrainedEnvelopePartBuilder(
                     speedupPartBuilder,
                     SpeedConstraint(0.0, EnvelopePartConstraintType.FLOOR),
-                    EnvelopeConstraint(maxEffort, EnvelopePartConstraintType.CEILING)
+                    PositionConstraint(maxEffort.beginPos, maxEffort.endPos),
                 )
             EnvelopeAcceleration.accelerate(
                 context,
diff --git a/core/src/main/kotlin/fr/sncf/osrd/stdcm/graph/PostProcessingSimulation.kt b/core/src/main/kotlin/fr/sncf/osrd/stdcm/graph/PostProcessingSimulation.kt
index 97b5a4ca87a..181dcdeaa40 100644
--- a/core/src/main/kotlin/fr/sncf/osrd/stdcm/graph/PostProcessingSimulation.kt
+++ b/core/src/main/kotlin/fr/sncf/osrd/stdcm/graph/PostProcessingSimulation.kt
@@ -194,6 +194,25 @@ private fun initFixedPoints(
     }
     if (hasStandardAllowance && res.none { it.offset == length })
         res.add(makeFixedPoint(res, edges, length, length, updatedTimeData, 0.0))
+
+    // Add points at the end of each engineering allowance
+    var prevEdgeLength = 0.meters
+    for (edge in edges) {
+        if (edge.afterEngineeringAllowance) {
+            if (res.none { it.offset.distance == prevEdgeLength }) {
+                res.add(
+                    makeFixedPoint(
+                        res,
+                        edges,
+                        Offset(prevEdgeLength),
+                        length,
+                        updatedTimeData,
+                    )
+                )
+            }
+        }
+        prevEdgeLength += edge.length.distance
+    }
     return res
 }
 
diff --git a/core/src/main/kotlin/fr/sncf/osrd/stdcm/graph/STDCMEdge.kt b/core/src/main/kotlin/fr/sncf/osrd/stdcm/graph/STDCMEdge.kt
index f654a6c71c2..e2c43bd1200 100644
--- a/core/src/main/kotlin/fr/sncf/osrd/stdcm/graph/STDCMEdge.kt
+++ b/core/src/main/kotlin/fr/sncf/osrd/stdcm/graph/STDCMEdge.kt
@@ -34,6 +34,9 @@ data class STDCMEdge(
     // How long it takes to go from the beginning to the end of the block, taking the
     // standard allowance into account
     val totalTime: Double,
+    // Set to true if a conflict in the current edge required an engineering allowance.
+    // Used for initial placement of fixed time points in post-processing.
+    val afterEngineeringAllowance: Boolean,
 ) {
     val block = infraExplorer.getCurrentBlock()
 
diff --git a/core/src/main/kotlin/fr/sncf/osrd/stdcm/graph/STDCMEdgeBuilder.kt b/core/src/main/kotlin/fr/sncf/osrd/stdcm/graph/STDCMEdgeBuilder.kt
index 31f84594bcc..7ee219a5bd7 100644
--- a/core/src/main/kotlin/fr/sncf/osrd/stdcm/graph/STDCMEdgeBuilder.kt
+++ b/core/src/main/kotlin/fr/sncf/osrd/stdcm/graph/STDCMEdgeBuilder.kt
@@ -158,7 +158,9 @@ internal constructor(
 
         var maximumDelay = 0.0
         var departureTimeShift = delayNeeded
-        if (delayNeeded > prevNode.timeData.maxDepartureDelayingWithoutConflict) {
+        val needEngineeringAllowance =
+            delayNeeded > prevNode.timeData.maxDepartureDelayingWithoutConflict
+        if (needEngineeringAllowance) {
             // We can't just shift the departure time, we need an engineering allowance
             // It's not computed yet, we just check that it's possible
             if (!graph.allowanceManager.checkEngineeringAllowance(prevNode, actualStartTime))
@@ -212,6 +214,7 @@ internal constructor(
                 envelope!!.endSpeed,
                 Length(fromMeters(envelope!!.endPos)),
                 envelope!!.totalTime / standardAllowanceSpeedRatio,
+                needEngineeringAllowance,
             )
         res = graph.backtrackingManager.backtrack(res!!, envelope!!)
         return if (res == null || graph.delayManager.isRunTimeTooLong(res)) null else res