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Old July 26th, 2010, 01:21 AM   #1
urbanlover
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Exit signing

How is exit signing done in your country? In the US Interstate exit signing is distance based, sequential was an option until 2009, but only a few states use it and they will have to switch over. Numbering begins at the southern or westernmost point in a state, the same general rule applies to loops that return to the mainline with numbering beginning at the southern or westernmost interchange. Spurs are numbered simply from the point where they begin, for beltways numbering is clockwise from the the first interchange west of the south end or at some other landmark nearby.










Last edited by urbanlover; July 26th, 2010 at 12:07 PM.
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Old July 26th, 2010, 02:09 AM   #2
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UK exit numbering is always sequential. You often get numbers such as 21A, where additional exits have been since added.

The route numbering system of Great Britain (so not Northern Ireland) comes out of two clockwise hubs centred on London & Edinbugh. The exit numbers will generally follow this system, counting away from London or Edinburgh.

It gets more complicated when the motorway doesn't start from one of these cities, or branch from a motorway that does. The M62 counts from Liverpool to Hull, which is west-to-east, in contrast to other parallel roads such as the M4 & M8 do it the other way, as you would imagine.

Not sure about Northern Ireland's system. It seems randomly allocated to me.

Last edited by Gareth; July 26th, 2010 at 04:07 AM.
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Old July 26th, 2010, 02:40 AM   #3
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Quote:
Originally Posted by Gareth View Post
UK exit numbering is always sequential. You often get numbers such as 21A, where additional exits have been since added.
Same thing in Italy, but just for tangenziali. Autostrade exits are not numbered at all.
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Old July 26th, 2010, 03:34 AM   #4
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Quote:
Originally Posted by g.spinoza View Post
Same thing in Italy, but just for tangenziali. Autostrade exits are not numbered at all.
Yes, and it causes problems sometimes to give references. It is more difficult to instruct someone about "Uscita Falconara Maritima" than to say A-14, exit 454.

On the flip side, all Autostrade exists are given an specific, unique name. Sometimes the proper naming of a new exist on a new freeway becomes contentious.
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Old July 26th, 2010, 04:35 AM   #5
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In the Philippines, exit numbering is distance-based according to the distance from a given island's Kilometer Zero. Since all expressways are currently in Luzon, exit numbers are based on the distance of the exit from Rizal Park in Manila. Hence exits, for example, on the North Luzon Expressway are numbered from Rizal Park northward, while on the South Luzon Expressway, exits are numbered from Rizal Park southward.

It's a bit more complex for the Subic-Clark-Tarlac Expressway since it does not begin or end in Manila. In this case, exit numbers begin from the endpoint's distance from Manila, then is ordered based on the direction of the expressway.

The Metro Manila Skyway, on the other hand, is unique since its exits do not have exit numbers. Some of the major exits, like Bicutan, would be numbered the same way as they would be on the South Luzon Expressway since the Skyway exit is just immediately above the SLEx exit.
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Old July 26th, 2010, 05:23 AM   #6
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Quote:
Originally Posted by g.spinoza View Post
Same thing in Italy, but just for tangenziali. Autostrade exits are not numbered at all.
Given how standardized things are in Europe generally I expected some form of exit numbering to required .Now IMO distance based is better since exits corresponds to the roads length letting drivers know how far they've driven and how far they have to go. But anything is better than nothing.

Last edited by urbanlover; July 26th, 2010 at 12:04 PM.
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Old July 26th, 2010, 10:11 AM   #7
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In Slovakia the numbering of exits is based on a kilometres from the starting point on the motorway. Actually that`s new on our motorways. Signs were totaly changed last year and now they will changing it till 2012.

near a motorway you can see this signs with kilometres



and according to these sign numbers of exits

this one is not according (it`s just example)

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Old July 26th, 2010, 11:16 AM   #8
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Exit numbering was introduced in Sweden less than 10 years ago on E4 and E6. Since then, the system has been expanded to cover all major motorways (see map). Numbering is sequential from south to north or from west to east. As a consequence exit numbers in the capital are fairly “high”. For example, the exit number for Stockholm (centrum) on the E4 is 160.

The motorway with the most exits is the 738 km long E4. There are 171 exits between Helsingborg and Gävle (numbered 25 to 196).


A Swedish exit number sign. The background is always yellow.


This map shows all motorways and roads with numbered exits.
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Old July 26th, 2010, 11:24 AM   #9
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Exit numbering was first introduced in the Netherlands in 1993. By 1996, all motorways had exit numbers. Exits are numbered sequentially.

Since 2006, the exit symbol is being introduced. Before that, the word "afrit" xx was used.

pre-2006 "afrit":
image hosted on flickr


post-2006 exit symbol:
image hosted on flickr
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Old July 26th, 2010, 12:02 PM   #10
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In Spain in some tolled motorways is sequential, but nowadays we sign exits with a distance based numbering. So if you have to exit A-23 at exit 360 and you are at kmpost 341, you have 19 km to go.
Italy really sucks. I would liked more if I stayed off A1 exit 279 instead of A1 uscita Prato-Calenzano.
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Old July 26th, 2010, 12:46 PM   #11
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In Norway numbering is sequential aswell. With bordercrossings or large towns as startingpoints.

The symbols:
Motorway exits


Dual carrigeway expressway exits


Single carrigeway expressway exits


Example of motorway signage:




Exit number list as of 2010:
http://www.vegvesen.no/_attachment/129705/binary/256842
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Old July 26th, 2010, 12:51 PM   #12
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It's interesting to note that some countries do not number motorway-to-motorway interchanges (for example the Netherlands, Belgium of France), as they are not considered points where you can "exit" the motorway.

Germany even numbers border crossings. The first actual exit in Germany is thus numbered "exit 2".

In the United States, an "A" or "B" suffix is often added in situations with cloverleafs, because there are technically two exits. There are also situations where an exit is numbered "0".

Distance-based exit numbering is slightly favored with the metric system, as the chance there are two exits within 1 kilometer is smaller than there are two exits within 1 mile, so you need less A / B suffixes.
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Old July 26th, 2010, 01:02 PM   #13
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Quote:
Originally Posted by Suburbanist View Post
Yes, and it causes problems sometimes to give references. It is more difficult to instruct someone about "Uscita Falconara Maritima" than to say A-14, exit 454.
Problems? How one is supposed to remember all that numbers? I think it's much easier to remember the name of the place... is it easier to say "exit at Bologna" if you want to go to Bologna or to say "exit 373"??
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Old July 26th, 2010, 01:08 PM   #14
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In Hungary exit numbers have been used for some years. They're distance based, following the km-distance from the beginning of that certain motorway.
However in all ways that start from Budapest the km-signs are not organized from the beginning of the motorway but the center of Budapest, the so called "zero km sign") and exit signs work according to km signs.
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Old July 26th, 2010, 01:16 PM   #15
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In some cases, sequential exit numbering on a certain motorway can also be continuation of another motorway. This is for example used in the Netherlands, Belgium and France. It can be worked out in a way that multiplexes have the same exit numbers for both motorways.
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Old July 26th, 2010, 01:21 PM   #16
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Yep, French A7, A8 and A9 share the same exit numbering.

Quote:
Originally Posted by g.spinoza View Post
Problems? How one is supposed to remember all that numbers? I think it's much easier to remember the name of the place... is it easier to say "exit at Bologna" if you want to go to Bologna or to say "exit 373"??
Exit numbering is better. With sequential numbering you can know the number of exits remaining until your exit, and with distance based you can know the distance and even the time remaining until your exit. But how on hell I can know distance or number of exits remaining to uscita Prato-Calenzano???
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Old July 26th, 2010, 01:22 PM   #17
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But how on hell I can know distance or number of exits remaining to uscita Prato-Calenzano???
Why would you want to know the number of exits in between? It makes much more sense to know the distance.
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Old July 26th, 2010, 02:11 PM   #18
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In Malaysia, exit numbers starts with "EXIT". Exit code for expressways are yellow in colour and blue for federal roads. Exit code with continue with expressway or federal routes shield and follows the exit number. Example : EXIT 508 for Seafield Interchange in Road E5.
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Old July 26th, 2010, 03:00 PM   #19
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Exits in Virginia are numbered the same as the mile markers - so if there's an exit between mile 118 and 119 it's signed as Exit 118. And if there are a series of exits, it may be "EXit 118-N" for northbound traffic or "Exit 118-E" for eastbound traffic (W for west and S for south), but if it's anything more complicated than that, which the real Exit 118 actually is, they sign it sequentially as "Exit 118-A", "Exit 118-B" and "Exit 118-C".
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Old July 26th, 2010, 03:02 PM   #20
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Quote:
Originally Posted by g.spinoza View Post
Problems? How one is supposed to remember all that numbers? I think it's much easier to remember the name of the place... is it easier to say "exit at Bologna" if you want to go to Bologna or to say "exit 373"??
You find it sensible, because you're used to it. For us it's different.
Rarely there is one exit per city, and it's easier to remember Exit 373 than Bologna Xxxxxx, if you don't know the language.

Best, IMHO, though, would be Bologna 1, Bologna 2, etc. I haven't seen that system anywhere.
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