Remember when planning a car or RV trip involved packing stacks of maps for every area along the planned route. Impromptu travel, or ventures into unfamiliar areas, often required stops at gas stations to ask for directions. How did we ever mange to travel by car before the advent of automotive GPS units?
Global positioning satellites (or GPS), were originally designed for the military. The satellites were available for public use in the early 1980s, but for security reasons the military interfered with the signals, rendering them useless for precise navigation. Ubiquitous GPS become a reality in 2000, when President Clinton signed a bill requiring the military to stop scrambling civilian GPS signals.
We purchased our first GPS in 2005. The unit, primitive compared to the model we use today, was developed specifically for Rvers by Lowrance, makers of marine GPS devices. The voice-guided navigation was a computerized female voice we named Gertrude, and we viewed a route map on a cluttered, five-inch screen. The first Gertrude was replaced with a sleek Garmin Nuvi in 2009. It featured the same-sized screen, but made better use of the viewing area, and included real-time traffic alerts. Last December we purchased our third Gertrude, this time a Garmin Nuvi 2797 which features a seven-inch screen – easier viewing for our senior citizen eyes.
We share a single device between our car and motor home, and we appreciate the enhanced features found in our newest Gertrude (we actually call this one Gertie). Traffic reporting is much improved, the quality of the electronic voice is more human sounding, and it responds to simple voice commands. A smartphone links to the GPS speaker via Bluetooth, and included is a lifetime subscription for updating the installed maps. An extensive points-of-interest data-base makes navigating to all types of public places relatively simple. The accuracy of the unit is such that the voice will tell you to "turn left in 200 feet at the Shell Station," and when approaching a highway ramp the voice signals which lanes to use and the screen view is a 3-D picture including realistic looking road signs and exit lanes. For example, if their is a two lane exit, it verbally and visually shows the two lanes and demonstrates which lane you should be in for your specific route.
One thing using a GPS has not done is make our use of paper maps completely superfluous. We still carry state maps in the car and RV, and when navigating unfamiliar roads I use the maps to double check our location. More than once I have heard someone tell a story about how they relied exclusively on their GPS, and ended up at a washed out road or turned the wrong way into a one-way street. While the current system of global positioning satellites are excellent, mistakes do happen, and it is better to have a backup in place.
I also double-check Gertrude's traffic alerts with two smartphone apps, Intrix and Waze. Both apps are available for iOS and Android, and while they can also provide turn-by-turn navigation, I use them exclusively for real-time traffic updates. Intrix's excellent road alert system includes live camera feeds and detailed information about delays. Users are encouraged to add information, and when driving past a reported accident you can send notification if a reported delay has cleared. Intrix traffic reporting is available in most major population centers of the country.
Waze, recently purchased by Google, is advertised as a "community based mapping, traffic & navigation app." The app relies on users to provide traffic information, and works best in more populated areas. While not as sophisticated as Intrix, the results are both accurate and useful. When we are driving in a heavily trafficked area, I use both apps, going back and forth to garner as much information as possible, and we have used the information to help circumvent major highway delays. One caveat to remember when using these apps is that they are data and battery hogs, constantly sending and receiving information, even when working in the background. My approach is to quit both apps immediately after checking for traffic problems.
My navigational arsenal also includes the mapping apps on my iPhone; Maps from Apple (available only for iOS) and Google Maps. Both work equally well as voice-guided, turn-by-turn navigation systems, and during our recent trip to Hawaii and California, my iPhone was our GPS. With two people in the car, a smartphone makes an excellent GPS, but it would be unadvisable to use when driving solo — looking away from the road to see the map on the small screen could prove dangerous – akin to texting-while-driving.
For more information on the traffic alert app, visit waze.com or intrixtraffic.com. Until next week, visit onmouseclick.blogspot.com for the online version of OnMouseClick.





