diff --git a/3-transport/lessons/1-location-tracking/README.md b/3-transport/lessons/1-location-tracking/README.md
index bfd7229..418e027 100644
--- a/3-transport/lessons/1-location-tracking/README.md
+++ b/3-transport/lessons/1-location-tracking/README.md
@@ -116,7 +116,7 @@ GPS used to have limitations on accuracy enforced by the US military, limiting a
 
 ✅ If you have a smart phone, launch the mapping app and see how accurate your location is. It may take a short period of time for your phone to detect multiple satellites to get a more accurate location.
 
-> 💁 The satellites contain atomic clocks that are incredibly accurate, but they drift by 38 microseconds (0.0000038 seconds) a day compared to atomic clocks, due to time slowing down as speed increases as predicted by Einstein's theories of special and general relativity - the satellites travel faster than the Earth's rotation. This drift has been used to prove the predictions of special and general relativity, and has to be adjusted for in the design of GPS systems. Literally time runs slower on a GPS satellite.
+> 💁 The satellites contain atomic clocks that are incredibly accurate, but they drift by 38 microseconds (0.0000038 seconds) a day compared to atomic clocks on Earth, due to time slowing down as speed increases as predicted by Einstein's theories of special and general relativity - the satellites travel faster than the Earth's rotation. This drift has been used to prove the predictions of special and general relativity, and has to be adjusted for in the design of GPS systems. Literally time runs slower on a GPS satellite.
 
 GPS systems have been developed and deployed by a number of countries and political unions including the US, Russia, Japan, India, the EU, and China. Modern GPS sensor can connect to most of these systems to get faster and more accurate fixes.
 
diff --git a/quiz-app/src/assets/translations/en.json b/quiz-app/src/assets/translations/en.json
index 4484a57..ad52ffa 100644
--- a/quiz-app/src/assets/translations/en.json
+++ b/quiz-app/src/assets/translations/en.json
@@ -1011,6 +1011,116 @@
 						]
 					}
 				]
+			},
+			{
+				"id": 21,
+				"title": "Lesson 11 - Location tracking: Pre-Lecture Quiz",
+				"quiz": [
+					{
+						"questionText": "Your location can be defined using",
+						"answerOptions": [
+							{
+								"answerText": "Latitude only",
+								"isCorrect": "false"
+							},
+							{
+								"answerText": "Longitude only",
+								"isCorrect": "false"
+							},
+							{
+								"answerText": "Latitude and Longitude",
+								"isCorrect": "true"
+							}
+						]
+					},
+					{
+						"questionText": "The types of sensors that can track your location are called:",
+						"answerOptions": [
+							{
+								"answerText": "GPS",
+								"isCorrect": "true"
+							},
+							{
+								"answerText": "PGP",
+								"isCorrect": "false"
+							},
+							{
+								"answerText": "GIF",
+								"isCorrect": "false"
+							}
+						]
+					},
+					{
+						"questionText": "There is no value in tracking vehicle locations",
+						"answerOptions": [
+							{
+								"answerText": "True",
+								"isCorrect": "false"
+							},
+							{
+								"answerText": "False",
+								"isCorrect": "true"
+							}
+						]
+					}
+				]
+			},
+			{
+				"id": 22,
+				"title": "Lesson 12 - Location tracking: Post-Lecture Quiz",
+				"quiz": [
+					{
+						"questionText": "GPS data is sent from sensors using:",
+						"answerOptions": [
+							{
+								"answerText": "Latitude and Longitude coordinates",
+								"isCorrect": "false"
+							},
+							{
+								"answerText": "Addresses",
+								"isCorrect": "false"
+							},
+							{
+								"answerText": "NMEA sentences",
+								"isCorrect": "true"
+							}
+						]
+					},
+					{
+						"questionText": "To get a good GPS fix you need to receive signals from at least how many satellites",
+						"answerOptions": [
+							{
+								"answerText": "1",
+								"isCorrect": "false"
+							},
+							{
+								"answerText": "2",
+								"isCorrect": "false"
+							},
+							{
+								"answerText": "3",
+								"isCorrect": "true"
+							}
+						]
+					},
+					{
+						"questionText": "GPS sensors send data over:",
+						"answerOptions": [
+							{
+								"answerText": "SPI",
+								"isCorrect": "false"
+							},
+							{
+								"answerText": "UART",
+								"isCorrect": "true"
+							},
+							{
+								"answerText": "Email",
+								"isCorrect": "false"
+							}
+						]
+					}
+				]
 			}
 		]
 	}