[sedachv]

> I can't imagine why you wouldn't want navigational assistance.

Here is why I look up directions in advance in almost all situations:

* GPS is a distraction to maintaining awareness while driving, motorcycling, and bicycling.

* Navigational assistance does not help you when walking, taking public transit or taxis. Using GPS while driving prevents you from learning the layout of the place you are in which transfers to navigational competence for these other modes of transportation.

* You miss fun roads when following GPS navigation.

* GPS navigation is useless when planning long bicycle and motorcycle tours. I pick waypoints and routes between them in advance.

* GPS will route you into sketchy situations (like to phantom bridges) that you could have predicted by looking at a map.

* GPS does not take weather conditions into account when routing. People have gotten into floods (easy to see when looking at rivers and topo on a map in advance), stuck in snow, and have even died in the desert: http://www.sacbee.com/entertainment/living/travel/article257...

I do not know very many competent drivers who rely on GPS navigation. I see plenty of "GPS zombies" obliviously plowing through intersections and ignoring crosswalks every day.

The most use I get out of having a GPS dash unit is on trails and off-roading in my truck or motorcycle, where there is usually no signage for forest roads and trails.

[e28eta]

I know how to read a map. I have a good memory. I have a good sense of direction. I did a fair amount of driving before getting a smartphone/GPS. I delivered pizzas for ~3 years, and I'd look up the 1-5 houses on our paper maps at the store showing every street, nearly every house by number, most of the apartments by number, and then memorize the route. I drove cross country a couple times with basic AAA maps and printed Google Maps directions.

I'll defend using GPS on my phone to navigate. It provides a couple benefits that I really enjoy.

1. It knows what is ahead of me before I do. Specifically traffic, where it sometimes provides useful re-routing (although I dislike Waze's re-routing). Also, Waze's user reports can be helpful to warn about debris in the road, etc.

2. It has a consistent interface. When driving in an unfamiliar location, being able to look in one place to see if the next street is the one I need is way better than trying to find & read every street sign.

3. It has a voice interface, which I believe is safer than trying to read my handwritten notes or the printed google maps directions as a driver.

4. I appreciate seeing the current Speed Limit, displayed by Waze.

5. It greatly reduces the cost of missed turns. I hate seeing cars cut across multiple lanes of traffic (or even just one!) at the last minute to make their exit.

The GPS does make it easier to navigate. I think that frees up more of my attention to focus on other aspects of driving: watching the cars around me, looking for pedestrians, cyclists, and other hazards. I believe that actually increases my awareness of what's going on around me.

I agree that not everyone becomes a better driver when using GPS, but I think they could.

[Arizhel]

Exactly; I agree 100%. GPS has made me a much better driver: I don't miss turns, I'm not distracted trying to find some fallen-down or turned-sideways street sign or trying to read building numbers from the street, and I'm alerted to traffic backups so I have a chance of avoiding them.

[learn_more]

Well said. To clarify my point, GPS maps can actually be a learning tool instead of a crutch. But it seems to require static map orientation. When the map is always oriented north, it teaches you about the city as you see your location move within it. When it's constantly shifting the map orientation around, it seems it's too confusing to extract "big picture" knowledge. I don't think most people realize this, since mapping systems often default to the "driver-centric" viewpoint, and if they don't, it's the first thing people change.

[sedachv]

Good point. I always have to set whatever GPS I am trying to use to fixed scale (no auto-zoom) map view with "north is up" before things feel right.

[douche]

GPS also does not work underground. Anyone who has driven through Boston's Big Dig and tried to rely on turn-by-turn directions quickly learns this, accompanied by much cursing.