Green Light

Start Up Screen
Quiz Screen
Statistics
Home Screen with Timer

Green Light

To download Green Light on an Android phone, scroll down to the bit.ly link and download the .apk from our Mega folder.

What it does

Green Light is an app meant for driving students that helps them stay safe by making them aware of their driving pattern. Our app uses the phone's accelerometer to detect hard turns and reckless driving. Green Light has a safety feature that detects when you get into a crash and call the authorities if needed. We also have a timer that keeps track of how long you have been driving and a milestone system to keep the user informed of their progress. Using the phone's GPS we also keep track of the distance and speed to the nearest thousandth of a mile. Our app then takes into account all of this and provides the user with a driving score from 0-100.

How we built it

Our team built Green Light using Thunkable. Thunkable is an app development platform that lets you build native apps using common app elements along with features such as Bluetooth, GPS, Wi-Fi and more.

Accomplishments that we're proud of

We are proud of the analytical thinking we used to get various parts of the app working. For the timer feature, we had to use flowcharts to keep track of the variables and write down a pseudocode before we began making it. We are also proud of our implementation of our distance tracker. This was the largest challenge that we faced. We tried implementations of different formulas. We settled on calculating the change in initial longitude and latitude and converting that total distance into miles. We have it calculated to the nearest thousandth of a decimal.

What we learned

We learned that 50% of teen fatalities in NC roads were from teens that were not wearing their seatbelts. We also learned about the "5 to Drive" safety tips. We expanded our knowledge of app development and were excited to participate in our first hackathon together. All of us learned about time management skills, and improved our collaboration skills.

Tutorial Video

Click Here

Built With

thunkable

Submitted to

Ready, Set, App!

Created by

I mainly bugfixed and provided ideas for how we would proceed. Specifically, I worked on getting statistics working, such as the timer and the distance. In addition, I also helped design the UI. Finally, I recorded part of our showcase video and edited it.

Brandon Yang
I mostly helped in giving ideas to the team, such as the idea to add a bottom bar to the app for easy navigation. I also helped design the UI, specifically the home screen with the start driving button. I also helped in bug fixing and helped to fix some of the bugs that came up during the development of our app.

Kriti Nanda
I worked on most of the code that makes the app work on the back-end. I spent most of my time editing code on the home screen "Start" button. I applied math and cs concepts i learned in class to this project by using various formulas (ie. distance formula) and using Java knowledge (ie. for/while loops) to build really good code for the app!

Rohan Tyagi
I took charge of our app's frontend development. I was responsible for choosing color schemes, and designing our app's UI. I also helped work on the practice quiz and backend development for the settings, student profile, quiz, and statistics pages. I was also responsible for the implementation of our app's safety features. I also did the debugging of our app. I helped record our team reflection.

Arjun Rao
My role in the project was to be able to organize and keep team members on task. I also helped develop the quiz portion of the app as well as the foundations for how our app is structured, edited the reflection video along with Brandon Yang, I contributed with the development of the UI and debugged the timer and the distance, which took a long time to debug.

Samarth Das
Hi I am a person who is living.