diff --git a/src/main/java/club/joylink/rtss/simulation/cbtc/ATP/ground/MaService.java b/src/main/java/club/joylink/rtss/simulation/cbtc/ATP/ground/MaService.java
index b7520a523..e65d21b4d 100644
--- a/src/main/java/club/joylink/rtss/simulation/cbtc/ATP/ground/MaService.java
+++ b/src/main/java/club/joylink/rtss/simulation/cbtc/ATP/ground/MaService.java
@@ -381,8 +381,9 @@ public class MaService {
         boolean right = train.isRight();
         Ma ma = null;
         boolean front = false;
+        int iterMax = 50;
         Section section = tailPosition.getSection();
-        for (int i = 0; i < 50 && section != null; i++) {
+        for (int i = 0, j = 0; i < iterMax && j < 3 && section != null; i++) {
             if (section.equals(headPosition.getSection())) {
                 front = true;
             }
@@ -433,7 +434,14 @@ public class MaService {
             }
             section = next;
             if (ma != null) {
-                break;
+                if (ma.distanceToEoa <= 0) {
+                    break;
+                }
+                if (j == 0) {
+                    j = 1;
+                } else {
+                    j++;
+                }
             }
         }
         return ma;
diff --git a/src/main/java/club/joylink/rtss/simulation/cbtc/data/vr/VirtualRealityTrain.java b/src/main/java/club/joylink/rtss/simulation/cbtc/data/vr/VirtualRealityTrain.java
index 6bea68caa..fc3b01234 100644
--- a/src/main/java/club/joylink/rtss/simulation/cbtc/data/vr/VirtualRealityTrain.java
+++ b/src/main/java/club/joylink/rtss/simulation/cbtc/data/vr/VirtualRealityTrain.java
@@ -687,6 +687,7 @@ public class VirtualRealityTrain extends VirtualRealityDevice {
             return;
         }
         this.fk = Math.min(fk, getCurrentFkMax());
+
         this.fb = Math.min(fb, getCurrentFbMax());
         if (fk > 0) {
             this.tbControl = TrainTBControl.TRACTION;
@@ -1053,7 +1054,8 @@ public class VirtualRealityTrain extends VirtualRealityDevice {
      * 设置紧急制动的功率和制动力
      */
     public void emergencyBreak() {
-        enforceUpdateTBForce(0, 350);
+        this.fk = 0;
+        this.fb = 350;
     }
 
     public boolean isInTheStandArea() {