Lane Assit and Junction View

 

What is the difference between:
Lane Assist, and
Junction View
?

lane assist

Lane assist is the little arrows that are in the upper left corner of the display while junction view is the "picture" of the interchange showing the path with a magenta arrow.

--
Illiterate? Write for free help.

also

Lane assist is always with you but junction view only occurs when the arrows are not enough - say when you can go left, somewhat left, center and right (as one possible example). Said another way, the route you are on is about to split into three or more different possible routes.

Thanks for...

Box Car wrote:

Lane assist is the little arrows that are in the upper left corner of the display while junction view is the "picture" of the interchange showing the path with a magenta arrow.

clearing that up for me!!!

--
"Backward, turn backward, oh time in your flight, make me a child again, just for tonight."

not that way in Albuquerque

jgermann wrote:

Lane assist is always with you but junction view only occurs when the arrows are not enough - say when you can go left, somewhat left, center and right (as one possible example).

Here in Albuquerque the last update map suddenly acquired Junction view on just about every interstate exit. Since the majority of these exits only have two choices, lanes continuing ahead and lanes getting off, they don't fit your model.

In the same update a huge number of intersections which didn't use to have Lane assist here suddenly got it. For a considerable fraction of those intersections, there are three or more choices (dedicated left, through lanes, and dedicated right) but I have not seen Junction view here on any non-interstate intersections.

Maybe the practice varies by city?

--
personal GPS user since 1992

No

No I think what your seeing in Albuquerque is correct.

Junction Views are a separate data file that Navteq incorporates into the City Navigator Map updates and are for use by devices that support the JV function. These views are obtained by Navteq and added to their data as received. IMO they really have nothing to due with multiple lane route choices. They are, as you are seeing, just a view of an interchange, road merger, etc. that Navteq has a "picture" of.

Lane Assist, on the other hand, is data Navteq has "integrated" into the City Navigator map data (not a separate file) and again is available to all devices that support the feature. Using this integrated data, the Nuvi is programmed to display/highlight the lanes you should use to follow your calculated route. In theory, although you could see both a JV and a Lane Assist arrow(s) for any particular maneuver along your route, you could see LA for every maneuver and never see a junction view.

--
Nuvi 350, 760, 1695LM, 3790LMT, 2460LMT, 3597LMTHD, DriveLuxe 50LMTHD, DriveSmart 61, Garmin Backup Camera 40 and TomTom XXL540s.

Hard to believe that it varies by city, but ....

archae86 wrote:

Here in Albuquerque the last update map suddenly acquired Junction view on just about every interstate exit. Since the majority of these exits only have two choices, lanes continuing ahead and lanes getting off, they don't fit your model.

In the same update a huge number of intersections which didn't use to have Lane assist here suddenly got it. For a considerable fraction of those intersections, there are three or more choices (dedicated left, through lanes, and dedicated right) but I have not seen Junction view here on any non-interstate intersections.

Maybe the practice varies by city?

That is very interesting. All of the Junction Views that I have ever seen had at least three routes (not nesessarily each one an Interstate but perhaps just a "numbered" state or county road) I could have taken.

What I read you to say is that you have seen Junction Views that show ONLY one "numbered" route (the interstate proceeding ahead). Prior to the Junction View appearing, what did the lane assist arrow show? And how did that compare to the junction View arrow?

Big increase

I've noticed in the most recent update, LA has exploded here in Tucson too. Nearly every intersection shows all of the lanes and which one you should be in. VERY helpful!

The last update included an increase in the number interchanges that show JV too.

Unlike the majority though, I find JV distracting and for me, pretty much useless. As such I have disabled JV on my unit and will continue to do so at every map update.

--
Nuvi 2595LMT, Nuvi 1490T, Nuvi 260, GPSMAP 195

lane assist

Some GPS does not have this feature including mine,it is possible to download and install the lane assist on my garmin?

Thanks

Junction View

All of the Junction View images I have seen are at Interstate interchanges where there are a number of lanes coming off of the same basic exit lane. A prime example is Exit 71 on I-85 in Atlanta where a couple of lanes go to the airport and some go to I-285 as well as some that keep you on I-85. Most of these views are only available in large cities with multiple Interstate junctions. In the most recent map upgrade, I saw a Junction View at the I-459 interchange in Birmingham. There didn't use to be one available before this upgrade.

...

Driver 38 wrote:

it is possible to download and install the lane assist on my garmin?

Nope, the device has to support it.

--
Michael (Nuvi 2639LMT)

Junction View and Lane Assist Expansion

spullis wrote:

All of the Junction View images I have seen are at Interstate interchanges where there are a number of lanes coming off of the same basic exit lane. A prime example is Exit 71 on I-85 in Atlanta where a couple of lanes go to the airport and some go to I-285 as well as some that keep you on I-85. Most of these views are only available in large cities with multiple Interstate junctions. In the most recent map upgrade, I saw a Junction View at the I-459 interchange in Birmingham. There didn't use to be one available before this upgrade.

It seems like what Garmin is doing is instead of adding junction view to just certain cities, they're adding junction view to all interstate exits for the entire state. Take Alabama for example. I just traveled through there a month ago and noticed that every single exit I got off of, whether it was to get on another interstate or just to get on another highway, it had a junction view. I also know that the whole states of Georgia and Arizona are now covered with Junction Views as well. I'm not sure this is going to last though. If you download 2012.10 again (like I had to), you'll notice that most of these junction views were taken out (that's what I was told by Garmin tech support) due to some units not having enough internal memory. Whether they will be replaced in the next map update or not, I have no idea. But who knows? It looks like every interstate exit in the US might be covered eventually, especially if Garmin is adding Junction views to whole states rather than certain cities. In addition, lane assist has also recently been expanded. I've noticed that no matter where I've traveled, as long as I'm in a place that has an interstate, not only does every interstate exit have lane information, but all the roads off of the interstate have lane information as well. Hopefully lane assist will be expanded even more too in the future. These two features have come a long way during the time I'v owned my 765t.

--
Garmin Nuvi 3490lmt, 765t with Lifetime maps and Clear Channel traffic

Do not thinks so

Driver 38 wrote:

Some GPS does not have this feature including mine,it is possible to download and install the lane assist on my garmin?

JV on Most of I-85 in Alabama

rame1012 wrote:

...Take Alabama for example. I just traveled through there a month ago and noticed that every single exit I got off of, whether it was to get on another interstate or just to get on another highway, it had a junction view.

The availability of JV in Alabama really exploded with the most recent map update, but not all exits on I-85 are covered. There is a JV for every exit where I-85 intersects with an interstate, US, or state highway.

There is no JV where I-85 interects a city street, however. For instance, there is no JV at Exit 3, Ann Street, in Montgomery, AL.

--
Garmin nüvi 3597LMTHD, 3760 LMT, & 255LMT, - "Those who wish for fairness without first protecting freedom will end up with neither freedom nor fairness." - Milton Friedman

JCV in Alabama

selfruler wrote:

The availability of JV in Alabama really exploded with the most recent map update, but not all exits on I-85 are covered. There is a JV for every exit where I-85 intersects with an interstate, US, or state highway.

There is no JV where I-85 interects a city street, however. For instance, there is no JV at Exit 3, Ann Street, in Montgomery, AL.

Ok, maybe not EVERY exit in Alabama, but at least 90%. Also, I-65, I-10, and I-20 have similar coverage of JCV.

--
Garmin Nuvi 3490lmt, 765t with Lifetime maps and Clear Channel traffic

which GPS

selfruler wrote:

The availability of JV in Alabama really exploded with the most recent map update, but not all exits on I-85 are covered. There is a JV for every exit where I-85 intersects with an interstate, US, or state highway.

There is no JV where I-85 interects a city street, however. For instance, there is no JV at Exit 3, Ann Street, in Montgomery, AL.

Was this true on both of your Nuvis?

How big was the .jcv file?

does the 775 have junctionview?

Does the 775 have junction view?

.

Yes, it does as well as lane assist.

--
nüvi 3790T | nüvi 775T | Those who make peaceful revolution impossible, will make violent revolution inevitable ~ JFK

yes, just an ordinary street

jgermann wrote:

What I read you to say is that you have seen Junction Views that show ONLY one "numbered" route (the interstate proceeding ahead). Prior to the Junction View appearing, what did the lane assist arrow show? And how did that compare to the junction View arrow?

Yes you understand me correctly. In Albuquerque many of the interstate exits simply lead to a quite ordinary city street. Before the junction view displays, the Lane assist displays typically three through lanes on the left with straightahead arrows shone pale, and one or two exit lanes shone bright. The junction view as displayed has in the cases that I've observed matched the advice of the Lane assist.

--
personal GPS user since 1992

Lane Assist and Junction View

We are in the process of traveling from Florida to NY then to Tennessee then back to Florida in our motorhome. We have found the LA to be very helpful. There have been times that our 1450LMT has indicated as many as five lanes. In every case the illuminated lane was right on. We occasionally got a Junction View but we found the LA to be most helpful.

Hold Up

Cyberian75 wrote:
Driver 38 wrote:

it is possible to download and install the lane assist on my garmin?

Nope, the device has to support it.

Not quite true. MOST devices that don't support lane assist and junction view can't add it. There are a few models where it is possible to add the features, by installing a customized version of the firmware or a version of the firmware from a.different country. However, that customization will not suddenly give the end user access to the JCV file needed to get junction view working, All they get is lane assist and a voided warranty.

--
"Anyone who is capable of getting themselves made President should on no account be allowed to do the job." --Douglas Adams

Lane Assist and Junction View

randco wrote:

We are in the process of traveling from Florida to NY then to Tennessee then back to Florida in our motorhome. We have found the LA to be very helpful. There have been times that our 1450LMT has indicated as many as five lanes. In every case the illuminated lane was right on. We occasionally got a Junction View but we found the LA to be most helpful.

On my Garmin 2350LMT, I travel from Illinois to Florida, and found Lane Assist is more important than Junction View, I think I only see about 11 Junction Views out of the 1250 miles I travel from Chicago to Florida.

Lane Assist Very Helpful

I'm currently traveling in a rental car in the New York City metropolitan area and I have found lane assist to most helpful. I've only seen the junction view come up once in a week and that was on a Jersey Turnpike exit somewhere near Hackensack.

To be quite honest, I like the feature, but it doesn't come up enough for it to be really that helpful up in this area.

JV and Lane Assist

SnookMook wrote:

I'm currently traveling in a rental car in the New York City metropolitan area and I have found lane assist to most helpful. I've only seen the junction view come up once in a week and that was on a Jersey Turnpike exit somewhere near Hackensack.

To be quite honest, I like the feature, but it doesn't come up enough for it to be really that helpful up in this area.

Lane assist is always there with the units that provide it. Junction View has other restrictions in that even if your unit supports Junction View it will only appear at certain junctions and only if you have an acive route taking you by the point.

While the number of Interstate junctions with JV is increasing, there is little chance you would see them in your local area as how often do you plan a route on roads you already know?

--
Illiterate? Write for free help.

Not sure

Not sure if your saying that Lane Assist will appear with out an active route but if so I think you need an active route for both Junction Views and Lane Assist arrows to appear.

--
Nuvi 350, 760, 1695LM, 3790LMT, 2460LMT, 3597LMTHD, DriveLuxe 50LMTHD, DriveSmart 61, Garmin Backup Camera 40 and TomTom XXL540s.

lane assist

t923347 wrote:

Not sure if your saying that Lane Assist will appear with out an active route but if so I think you need an active route for both Junction Views and Lane Assist arrows to appear.

You may be right about LA. I know it is true to have the active arrows highlighting which lane, but I seem to remember my 885 showing the arrows but with none highlighted. But I've been known to be wrong in the past.

EDIT: Just came back from a short trip and Juggernaut is correct regarding Lane Assist. It only appears when you are actively routing.

--
Illiterate? Write for free help.

Response to jgermann

jgermann wrote:

Was this true on both of your Nuvis?

How big was the .jcv file?

The 255 lacks both LA and JV.

Properties show the .jvc on the 3760 to be 97.2 MB (102,019,829 bytes).

--
Garmin nüvi 3597LMTHD, 3760 LMT, & 255LMT, - "Those who wish for fairness without first protecting freedom will end up with neither freedom nor fairness." - Milton Friedman

@selfruler

selfruler wrote:

Properties show the .jvc on the 3760 to be 97.2 MB (102,019,829 bytes).

WOW, that is 3 times the .jcv file on my 765T

Active Route Always On

Box Car wrote:

While the number of Interstate junctions with JV is increasing, there is little chance you would see them in your local area as how often do you plan a route on roads you already know?

Box Car--I live in central Florida and I'm up in the New York City area traveling on a business vacation. All of the driving I've been doing up here is with the Garmin with an active route and destination punched in.

Like I said above I've only seen the junction view come up once so far all week.

For more info, ...

jgermann wrote:
selfruler wrote:

Properties show the .jvc on the 3760 to be 97.2 MB (102,019,829 bytes).

WOW, that is 3 times the .jcv file on my 765T

For more info on jcv files, start around page 4 of this thread (starts July 21 after 3 PM with an entry by rame1012):

http://www.poi-factory.com/node/32321?page=4

JVC File Size

I've seen lots of comments where some folks report a 358 MB JVC file and others having a 46 MB JVC file. As noted above, on my 3760 the JVC file is 97 MB file.

I just assumed that the file would be much smaller because all the JV images only fill half the screen whereas before they filled the screen. From other posts, however, it seems there are a multitude of issues related to JVC file size.

--
Garmin nüvi 3597LMTHD, 3760 LMT, & 255LMT, - "Those who wish for fairness without first protecting freedom will end up with neither freedom nor fairness." - Milton Friedman

OK - I know I'm dumb

but where do I find the Junction View files - .jvc - on my 1490 -
Maybe I'm just confused !

That's not unusual !

--
MrKenFL- "Money can't buy you happiness .. But it does bring you a more pleasant form of misery." NUVI 260, Nuvi 1490LMT & Nuvi 2595LMT all with 2014.4 maps !

Blind Leading the Blind

MrKenFL wrote:

but where do I find the Junction View files - .jvc - on my 1490 -
Maybe I'm just confused !

That's not unusual !

I don't know about the 1490 but when I hook my 3760 up to my computer, the JCV file is one of the files in the .system file.

And, it is .jcv not .jvc as I typed it in previous posts. redface

--
Garmin nüvi 3597LMTHD, 3760 LMT, & 255LMT, - "Those who wish for fairness without first protecting freedom will end up with neither freedom nor fairness." - Milton Friedman

on my 765

MrKenFL wrote:

but where do I find the Junction View files - .jvc - on my 1490 -
Maybe I'm just confused !

That's not unusual !

the .jcv files in in the :\Garmin\JCV\ folder

Junction View in some areas

Junction View in some areas is few and far between. According to Garmin it is in larger cities. You can't get much larger than Metro NY and I have seen junction view images on my 1490 come up in a total of three locations - and that was it.

It is a much over touted and over rated feature. If it is not there for all intersections it is not of much value.

--
Garmin 1490T and Tom Tom In-Dash Eclipse II

That depends I guess

If you have the 358 meg file, I'm sure you'd seen many more popping up.

--
nüvi 3790T | nüvi 775T | Those who make peaceful revolution impossible, will make violent revolution inevitable ~ JFK

51 Mb

I did not remove my disabled 356 Meg JV file from my unit before updating the map. As is usual, I could install the lower 49 state version (all I need) with this file in place, but received a 51 Mb version of the JV file. I've now deleted the old version of the file and disabled the new, truncated version.

My guess is if I had deleted the old file before updating I probably would have had the large, full version forced on me again.

--
Nuvi 2595LMT, Nuvi 1490T, Nuvi 260, GPSMAP 195

JV files

Can the JV files be put on a memory card or do they have to reside on the internal memory of your unit?

Would not have worked anyway

rocknicehunter wrote:

I did not remove my disabled 356 Meg JV file from my unit before updating the map. As is usual, I could install the lower 49 state version (all I need) with this file in place, but received a 51 Mb version of the JV file. I've now deleted the old version of the file and disabled the new, truncated version.

My guess is if I had deleted the old file before updating I probably would have had the large, full version forced on me again.

The JCV file for 2012.1 won't work with 2012.2. You get nothing.

Huh?

If I was unclear, I got the full version when I updated to 2012.1.
I disabled the file by renaming the extension.

I did not delete it before updating to 2012.2. When I did update last night I had enough space for the Lower 49 and received a new JV file of only 51Mb.

I deleted the old (2012.1) version and renamed the new one so it is now disabled. If I need more space (unlikely) I'll delete that one too.

Unfortunately I did not get nothing, I got the new version of the JV file. I'd rather not get even this reduced size because I have no use for JV. For me it is just a waste of bandwidth during download and a waste of space on my unit.

I wish Garmin would give us an option so it isn't even downloaded instead of forcing it on those of us who don't like or want it.

--
Nuvi 2595LMT, Nuvi 1490T, Nuvi 260, GPSMAP 195

3%

rocknicehunter wrote:

If I was unclear, I got the full version when I updated to 2012.1.
I disabled the file by renaming the extension.

I did not delete it before updating to 2012.2. When I did update last night I had enough space for the Lower 49 and received a new JV file of only 51Mb.

I deleted the old (2012.1) version and renamed the new one so it is now disabled. If I need more space (unlikely) I'll delete that one too.

Unfortunately I did not get nothing, I got the new version of the JV file. I'd rather not get even this reduced size because I have no use for JV. For me it is just a waste of bandwidth during download and a waste of space on my unit.

I wish Garmin would give us an option so it isn't even downloaded instead of forcing it on those of us who don't like or want it.

Given that a map update runs to about a 2GB download, I don't see where an undesired 50MB portion of the download is worth even thinking about. Let it download, then delete or rename the jcv file on your GPS. Given the installation issues some are reporting using the new autoupdater, I'd just be happy that my GPS updated to the new map wink

i like it alot

i like it alot

True

but it still takes time to download and install it even if it is only 51Mb. It also takes my time to un-hid hidden files, navigate to the file, rename it and then re-hide the hidden files.

Minor for sure but Garmin could eliminate it all with a single check box before you begin the download...

Hoping you have no further troubles with your unit.

--
Nuvi 2595LMT, Nuvi 1490T, Nuvi 260, GPSMAP 195