diff --git a/package.json b/package.json
index 86b4448..b7cd21e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "pojazdownik",
-  "version": "1.8.0",
+  "version": "1.8.1",
   "private": true,
   "type": "module",
   "scripts": {
diff --git a/src/constants/speedLimits.json b/src/constants/speedLimits.json
index acb8a37..2197c90 100644
--- a/src/constants/speedLimits.json
+++ b/src/constants/speedLimits.json
@@ -1,81 +1,81 @@
 {
   "EU07": {
     "passenger": {
-      "650": 125
+      "650000": 125
     },
     "cargo": {
-      "2000": 70
+      "2000000": 70
     },
     "none": 110
   },
   "4E": {
     "passenger": {
-      "650": 125
+      "650000": 125
     },
     "cargo": {
-      "2000": 70
+      "2000000": 70
     },
     "none": 110
   },
   "EU07E": {
     "passenger": {
-      "650": 125
+      "650000": 125
     },
     "cargo": {
-      "2000": 70
+      "2000000": 70
     },
     "none": 110
   },
   "EP07": {
     "passenger": {
-      "650": 125
+      "650000": 125
     },
     "cargo": null,
     "none": 110
   },
   "EP08": {
     "passenger": {
-      "650": 140
+      "650000": 140
     },
     "cargo": null,
     "none": 110
   },
   "EP09": {
     "passenger": {
-      "650": 160
+      "650000": 160
     },
     "cargo": null,
     "none": 160
   },
   "ET41": {
     "passenger": {
-      "700": 125
+      "700000": 125
     },
     "cargo": {
-      "4000": 70
+      "4000000": 70
     },
     "none": 110
   },
   "SM42": {
     "passenger": {
-      "95": 90,
-      "200": 80,
-      "300": 70,
-      "450": 60,
-      "750": 50,
-      "1130": 40,
-      "1720": 30,
-      "2400": 20
+      "95000": 90,
+      "200000": 80,
+      "300000": 70,
+      "450000": 60,
+      "750000": 50,
+      "1130000": 40,
+      "1720000": 30,
+      "2400000": 20
     },
     "cargo": {
-      "95": 90,
-      "200": 80,
-      "300": 70,
-      "450": 60,
-      "750": 50,
-      "1130": 40,
-      "1720": 30,
-      "2400": 20
+      "95000": 90,
+      "200000": 80,
+      "300000": 70,
+      "450000": 60,
+      "750000": 50,
+      "1130000": 40,
+      "1720000": 30,
+      "2400000": 20
     },
     "none": 90
   }