Garmin, for example, says its GPS receivers are accurate to within 15m (49ft), 95 per cent of the time. For one thing, 15m isn’t actually all that precise if you’re trying to measure speed ...

Built for simplicity, elegance, and extreme practicality, Speed is a GPS speedometer that uses the iPad’s location data to tell you how fast you’re traveling. It works with iPads that have GPS ...

A new bill passed by the Washington State Senate mandates the use of intelligent speed assistance (ISA) devices for certain ...