Question: Do you know where the signal (that I can only assume is the method) is on the road or highway to tell current "smarter" cars what the speed limit is? I wonder how accurate they really are.
Answer: My advice is to not rely solely on the displayed GPS speed reading for your vehicle’s actual speed. Your vehicle’s speedometer is the best way to determine how fast you are traveling.
A GPS is a positional speedometer. It will show your speed based on the average distance covered off of several readings over the last few seconds and are generally accurate under normal driving conditions. The speed readings could be inaccurate if there is a temporary loss of signal.
Avoid distractions and always set your destination on your navigation system prior to driving and remember the new hands-free law that is currently being enforced in Minnesota.
The new law allows a driver to use their cell phone to make calls, text listen to music or podcasts and get directions, but only by voice commands or single touch activation without holding the phone.
Always be alert and be aware of the posted speed limit signs while driving. Remember that the speed limits start and end at where the signs are located.