This is a concept of an app i was planning on making that its purpose was to be displayed on a phone attached to a motorcycle's handlebars. It displays the riders current speed and also the speed limit of the road currently being driven on. If the rider goes faster than the road's speed limit, the "Your Speed" text will flash and beep, notifying the rider that they are going too fast. If you're wondering why it beeps because you won't be able to hear it on the road? There are special helmet bluetooth intercoms that can play sounds such as music from your phone into the helmet for the rider to hear.
I was planning to make the app in Code.org but I felt restricted with what I was making so I made my plans in scratch to see how I could make the app look and function. Obviously if I was to make and publish the app I would make some adjustments to the apps looks and functionality. I was also planning to add a GPS/Map so riders can set a route and follow it without leaving the app.