Google Maps is continually improving with serivces and fucnitons added regularly, as yet though there isn’t a speed alert system available. This has been solved by an independant developer who has put together an app called Velociraptor. The functionality is fantastic and adds an overlay to Google Maps that shows you the speed limit for the area you’re in and offers speed alerts when you exceed this.
The app is simple to install (are any actually difficult these days?), easy to understand and automatically loads when you load your navigation software. You choose the alert level; you can choose to give yourself 0%, 5%, 10%, 15% or 20% leniancy on the limit before the app tells you you’re being a little bit naughty. That is all well and good in theory and works well in some areas but I quickly discovered that the data is not completely correct. On a main road (60kph speed limit) close to my work, the app was telling me 40kph was the limit and continually alerted me that I was speeding when in fact I was still under the prescribed limit for that road.
My only suggestion to improve the functionality to the app at this point would be have a feedback button to get the developer to check their data source for what the limit is on various roads. While it’s not perfect it does add some really useful functionality to Maps when you’re in an unfamiliar area
Would you like to see an official version of this app added to Maps?