Here's how car speedometers calculate how fast your vehicle is going. And here's why they may not always be accurate.

You can use speedometer apps on your Android smartphone to find out the speed of your car, bike, or other vehicle. Speedometer apps tell you the current speed, average speed, over-speed alerts, trip ...

A recent update to Google Maps has allowed motorists to see the speed they are travelling, similar to the function already offered by the navigation app Waze. With GPS speedometers becoming more ...

A recent update to Google Maps has allowed motorists to see their live speed, similar to the function already offered by the navigation app Waze. If you're new to apps with a GPS speedometer, you may ...