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Nav appears to be shortest route rather than fastest route

I'm using v4.5 and today I had a route programmed in the car. It was leading me on a route that didn't use the nearby freeway, even though I had a hunch that the longer freeway route would be faster. So I took note of the estimated time to complete the route on the computer's route as I passed by the turn it wanted me to take, as I headed to the freeway. It very quickly recalculated the route, this time using the freeway, and gave me a shorter estimated time of arrival.

So it seems that the route it computes is the shorter distance, but not neccesarily the shorter time.

I hope this is a setting that can be changed in a future software release.

Agreed. I would love to see options added to the Nav that are standard in other programs, like Fastest Route vs. Shortest, or options to avoid tolls, avoid highways, etc.

No, I have found just the opposite...I have specifically seen the GPS pick the faster major highway route as opposed to another route that was a good 15 miles shorter (and only one minute slower) via a smaller highway (not a country road, just a two-lane highway, as opposed to a three-lane).

Tesla definitely needs revamp the GPS to offer more route options...At the very least, they should have a shorter/faster option, because it is certainly true that MANY drivers would often opt for a slighter slower route that was many miles shorter, especially if they are driving long distances. In a perfect world, they would emulate the current Google Maps feature that shows multiple route options, with the different mileage and timing, and let the driver pick the one they prefer.

I've been meaning to write a post on this, and an email to Tesla as well. Thanks for jump-starting the conversation.

hate the gps. need options like the other gps that i've worked with. shortest, fastest, more high ways, less high ways, avoid tolls, etc.

if i can avoid using the gps, i would. it sux in the current form. have taken me to the wrong place a couple of times already.

Mine also picks fastest. I fairly regularly go to NC to visit my family and back road, low energy route is 160 miles and 4 lane divided highway and interstate route is 200 miles; about 5 minutes faster. The nav consistently picks the longer route and continuously tries to reroute me to the freeway until I'm about 60 miles away from my destination.

I, too, would like to see either a setting for this, or the option, like on the desktop version, of picking from multiple routes

I agree that it is not very good. Yesterday I wanted to know how much charge I needed to get back since I didn't want to wait any longer than necessary. The route the S gave me was 199 miles. Google and Yahoo gave me routes of 153 miles. And these routes were basically the same for speed limits. And having driven most of those roads at some point in my life I knew the route given by the S was not even going to be the fastest as it was going to go through many small towns.

I realize the route was going to be a little more difficult to calculate since a river (Mississippi) was going to be in the way and there were not a lot of places where a bridge was located. But nearly 40 mile difference when range was my issue? It has to be better.

Interesting that people have seen the opposite behavior that I have. But the important test is to find out how much time the nav system thinks each route will take. You have to actually run an experiment to find out, have the nav system re-route while you are driving and keep track of its calculated times.

My one Ludditeism with the S: I still carry a map.

Does anyone know how to add more than one destination along a route? I seem to only be able to add one destination at a time, then have to add a new destination after reaching the last one. If I have to hit 5 locations, isn't there a way to enter all 5 addresses and have the NAV route me?

What you're looking for is waypoints. Don't know if 5.0 has them. 4.5 doesn't AFAIK.

On a 200 mile trip that I frequently take, my GPS routinely picks a route that is 25 miles longer and 30 min longer than the route I actually take. The difference is that it picks an (out of the way) Interstate highway through MSP/StP and I take a more direct US Hwy (55mph most of the way).
Interestingly, when I deviate from the GPS route, it recalculates and comes up with my preferred route, and shows that it is shorter in both time and distance!! So, it acknowledges the shorter route, but just does not calculate it prospectively!

@jt
No waypoints or alternate routes in 5.0, unfortunately.

Im waiting for my P85+ and my 2010 infiniti 45 has the same navigation algorithyms with real time traffic especially when theres 5pm thursday rush hour and its within a difference of 2 - 7 % time difference. sort of a pain but hope it get resolved.

yes it will offer the faster route only when the margin exceeds a preset limit but still sucks

but hey I'm so ready for the silent and deadly beast next month

+1 - always picks shortest route for me. I've noticed several times it choosing surface streets over faster interstate routes due to shorter distances.

For whatever reason, automotive nav systems manufacturers didn't feel waypoints were useful. Coming from boat navigation, where waypoints were essential, this really doesn't feel right. I find myself playing chicken with the nav system just to get it to pick the route I wanted in the first place. That defeats the utility of plan first, drive later navigation.

There is a lot of room for improvement and there is a pretty extensive history of things to do and things to avoid from the marine electronics business. I'm pretty sure Tesla doesn't write the code for either nav system, but whoever does (Navigon? Garmin?) could hit a home run by allowing waypoints for a Tesla. We need them at charging stations (d'oh!).

We put in all addresses we wanted ahead of time, so it would be in the History. As we got to each destination, we could pick the next one from the history list. Not ideal, but better than having to type in each one along the way. It also doesn't allow you to see the total planned trip miles and time by doing it this way. Hopefully will be in next update.

sxross - plenty of automotive GPS mapping systems have waypoints. I have had them on BMW's, a Mini, Mercedes, Toyotas, a VW, even a Ford pickup. In fact I can't think of one that is newer than 2005 that hasn't had waypoint capability - except the Tesla.

I guess waypoints would be kinda useless for ICE cars but I would love to use waypoints to get to all the superchargers on a road trip. I'm not sure if this is relevant but the nav is Garmin and maps is Google. I'm not sure if Garmin has shortest route vs. fastest time. I really hope Tesla switches go Google Maps Navigation in the future after they add lane guidance so we can have the avoid toll, alternate route options with Google Street View integration. Then again, I haven't owned a Garmin before so I don't know what features they have that just have not been implemented in the Model S

I wouldn't be surprised if it's not actively choosing either shortest or fastest, just the first route it finds. Mine's all over the place. And it also frequently tries to send me the wrong way on one-way streets. It's much "dumber" than any previous nav system I've had. Good thing is I know it will get better.

@P_D, no. Not everybody but Tesla has this. I have had two Garmin Nuvi's since 2005 and they don't have waypoints. I have had 2 Lexuses since 2005 and they don't have waypoints. I have a 2004 BMW and it doesn't have waypoints.

Waypoints are useful and pretty easy to implement. I hope Tesla puts this in the wishlist category. Now, the "3-routes" thing is standard on every nav system I've ever seen. Or at least avoid highways, avoid U-turns, avoid toll roads, etc. And no, Tesla doesn't yet have this.

sxross - wrong - I never said that all GPS systems have waypoints - just that MANY do (you said that none have them: "automotive nav systems manufacturers didn't feel waypoints were useful").

We currently have nine active land-based Garmin units including a Nuvi, two 665, two 640, one BMW Navigator made by Garmin, a Montana, and two Edge 800's (plus six on boats and a plane) and they all support multiple waypoints per trip.

You clearly never learned how to use your Lexus units. I have had a Lexus and three Toyotas with GPS units - they all have multiple waypoint capability. The Lexus uses Toyota's GPS system and they definitely have waypoints - perhaps you need to do a bit of research. Entering them can be a bit tricky. For example, on the Toyota/Lexus systems, the way to add a waypoint isn't obvious. When you have a destination running, you can go into destinations again, select a new destination, and then the system will prompt you to decide whether it is a new destination (end of trip) or an interim waypoint. Here is a tutorial on adding multiple waypoints into an older (2nd generation) Toyota Prius GPS unit:

http://cnettv.cnet.com/destination-entry-2010-toyota-head-unit/9742-1_53...

@Puntoteague_Dave you are right. My problem with the Tesla GPS is that it will not reroute to avoid traffic, this I think is the most important function. Yes I have noticed the Lexus will choose a state highway with a hundred traffic lights over an equivalent 4 lane road with ten lights because it is a State highway.

Of the nav features missing on Model S that I had on my 6 year old Lexus - the one I miss the most is integration with the real-time traffic - and having the nav system warn about upcoming traffic issues and offer to re-route around the traffic problem.

Tesla should make a major investment in the on-board software and bring all of their software (navigation, smart phone integration, web apps, ...) up to at least a level comparable to the other auto manufacturers.

Since the Nav system that Tesla uses is just Navigon, I would like to at least see the same features that I have on my $29 Navigon app on my iPhone. There are over 30 features which are not in the Tesla Nav software. I would especially like to see the current speed limit displayed with warnings when I exceed it by a predetermined amount.

Nav NEEDS to have options to pick what you want. Shortest vs. Fastest vs. alternate.

This is a MUST HAVE!

Just because of this thread, yesterday, I navigated home from work. It recommended a way that was going to be longer distance AND take more time. I instead went my normal route. When I missed the recommended turn, it recalculated my normal route: total distance decreased by a half-mile and ETA improved by 2 minutes.

So, yes, the Navigon system is pretty terrible for route optimization.

In interesting observation in traveling on Friday and Saturday. The Nav system overestimated travel time on a 21 mile trip by about 20 minutes. It was still over by at least 15 minutes within 5 miles of arrival. The estimated distances seemed to be accurate.

I wish it included routing by HOV lanes since we have HOV access in California.

It probably thinks those can be used only by HOVercraft.


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