diff --git a/main.py b/main.py
index dc354ba..1b07617 100644
--- a/main.py
+++ b/main.py
@@ -96,14 +96,29 @@ while running:
 
         if event.type == pygame.MOUSEBUTTONDOWN:
             mx, my = pygame.mouse.get_pos()
+            if event.button == 1:
 
-            if mx < 800: #sim area
+               if mx < 800: #sim area
 
-                if placing_mode == "intersection":
+                  if placing_mode == "intersection":
                     intersections.append((mx, my))
-                elif placing_mode == "light":
+                  elif placing_mode == "light":
                     lights.append(TrafficLight(mx, my))
 
+        if event.type == pygame.MOUSEBUTTONDOWN: #delete things
+            mx, my = pygame.mouse.get_pos()
+            if event.button == 3:  # right mouse
+                if placing_mode == "intersection":
+                   #remove within 20px
+                   intersections = [
+                       (x, y) for (x, y) in intersections if not (abs(mx - x) < 20 and abs(my - y) < 20)
+                   ]
+                if placing_mode == "light":
+                    lights = [
+                        light for light in lights if not (abs(mx - light.x) < 20 and abs(my - light.y) < 20)
+                    ]
+
+
         #switch placing mode
         if event.type == pygame.KEYDOWN:
             if event.key == pygame.K_1: