Nuvi's directions undesirably avoids left turns

 

For the longest time, my Nuvi 350 has been routing directions to avoid left turns. Often, the directions will send us ahead of a left turn to route us into a U-turn and then a right turn. Other times, it will route us around three or even four sides of an entire block to direct us into a right turn to our destination in a case where a left turn would have been much easier for us and more efficient (less driving).

I've look for a Nuvi 350 setting to change this, but could not find any. Any help in fixing this would be appreciated.

--
Vince Nuvi 350

I would guess it has to do with the map data base

I have noticed the same thing. I would guess it has to do with the map data base not knowing if there is a center curb divider and an opening that would allow a left turn before the next intersection. Probably just uses the safer known alternative which would be the next intersection where a U turn could be performed.

--
Garmin Drive Smart 55 - Samsung Note 10 Smartphone with Google Maps & HERE Apps

UPS?

Avoiding U-turns

VinceCANuvi wrote:

For the longest time, my Nuvi 350 has been routing directions to avoid left turns. Often, the directions will send us ahead of a left turn to route us into a U-turn and then a right turn. Other times, it will route us around three or even four sides of an entire block to direct us into a right turn to our destination in a case where a left turn would have been much easier for us and more efficient (less driving).

I've look for a Nuvi 350 setting to change this, but could not find any. Any help in fixing this would be appreciated.

You should have an option to avoid u-turns. However, I have seen the same thing. There are times when Jill will take me on what seems to be a ridiculous series of neighborhood turns. What I have noticed is that this will happen if your destination is on the south side of the street and you are heading north. Jill will take you around and around until you end up behind your destination but on the right side of the street.

The old adage applies: "There is no substitute for local knowledge". If you know some of the guidance doesn't make sense, don't follow it.

Here is a case in point: Here in Arizona the streets are laid out in a grid and, by way of an example, go from Gold Canyon into Phoenix, a distance of some 50 miles. Route 60, Southern Ave, Baseline, Broadway-- all parallel, all go to the same city, Phoenix, albeit different parts. If I set a Phoenix destination, Jill will want me to take Rt 60. If I stay on any of the other streets, she will attempt to get me back onto Rt 60 at every single intersection. Yes, I know I can option Rt 60 out, but the point is is that Jill is not smart enough to know that Southern Ave will get me to the exact same city and that once I get there, I know how to get to my destination without her help.

660 messed up too

To get to my house you make a couple of turns, then head north on the longest street in the sub-division. Turn right onto our street (heading East). Go past the front drive way. Turn left onto the street East of our house (now North and yes we are on a corner lot) and turn left into the side driveway (Heading West). You are now in front of the garage doors and aimed the same direction and location that I set home from. Been getting home this way since we moved here years ago.

My 660 routes me past my street and up to the next block. This is the same street that is to the east. It starts out heading north, but slowly turns to the West and "Tees" into the Main road. Garmin wants to take me 1/4 mile past my street to avoid a 2 left turns, I suppose.

It started doing this with the latest map update. Was never a problem before.

--
Metricman Nuvi 3597 GTM-60 Traffic Receiver Williamsburg, VA

Funny

CraigW wrote:

Maybe you have the UPS version of the nuvi wink

http://www.wired.com/autopia/2007/12/no-left-turn-so/

http://www.poi-factory.com/node/30481

That was a good one! smile

you're right the gps tries

you're right the gps tries to put you onto the right side of the street, also the map has different colored roads and they all have a different priority when it come which road the gps takes, the thick yellow ones are the ones the gps tries to use

--
Today is a gift, that's why they call it the present...

.

Do the pommie versions avoid right turns?

Roundabouts

CraigW wrote:

Maybe you have the UPS version of the nuvi wink

http://www.wired.com/autopia/2007/12/no-left-turn-so/

http://www.poi-factory.com/node/30481

Or Traffic Circles, whatever you want to call them... That's why they work so well too. You just don't sit there waiting to make a turn. Its a real shame they never caught on here like they have elsewhere.

--
Drivesmart 66, Nuvi 2595LMT (Died), Nuvi 1490T (Died), Nuvi 260 (Died), GPSMAP 195

Thanks

Thanks for all your replies.

--
Vince Nuvi 350

Safety...

cool

Garmin has tried to make this a safety issue...

Right-hand turns seem to be safer than lefts, especially if you need to cross traffic to make one.
(left turns)

However, any trucker will tell you that left hand turns are safer as they favor the driver side and offer more of a turning radius.

It's all about safety!

--
"Destination Eternity" Garmin 765T, & Samsung Galaxy Note Edge

turns

Although I have a different model Nuvi, I would think you might be able to check or uncheck the relevant "avoidances" under the navigation area. Just a thought

.

Makinja wrote:

Although I have a different model Nuvi, I would think you might be able to check or uncheck the relevant "avoidances" under the navigation area. Just a thought

There's no "Left Turn" avoidance to choose or unchoose.

Nuvi 350

I have a Nuvi 350 but with the original 2008 maps for North America. The software has been up to date for a long time.

I've not seen any behavior to avoid left hand turns in it at all in my area (D.C. & MD). Perhaps it is map related. If you have saved the older maps perhaps you can go back to those to see if the problem persists. Be sure to back up your current maps though.

Fred

Left Turns

I agree, those are the only times I've noticed this quirk.

rjrsw wrote:

I have noticed the same thing. I would guess it has to do with the map data base not knowing if there is a center curb divider and an opening that would allow a left turn before the next intersection. Probably just uses the safer known alternative which would be the next intersection where a U turn could be performed.

--
nuvi 855. Life is not fair. I don't care who told you it is.