Road Numbers: What should I do?

Posted by Litvania on 2 December 2017 in English (English)

Hey everyone,

I've had this problem recently, and it may be relevant to some of the newer users around here, so:

What system of road naming is consistent?

I thought of this one system for Litvania in April, where primary roads are S[number], secondary D[number], and tertiary are just numbers.

But where do these start? How do i keep it consistent?

I ask for suggestions and maybe new proposals, everything is welcome. Unnamed roads are boring.



Location: D315, Kolin, okres Kolin, Pomorie, Litvania

Comment from Rustem Pasha on 2 December 2017 at 14:09

Road numbers evolve with the grid development so defintely it wouldn't be a fully consistent system, where for example roads in capital are numbered from 1 to 10. It is because when we settled our system some roads didn't exist or have other class. For example even if you decide to start the system with low numbers in capital and number all your primary roads from 1 to 67, when you build a bypass around the capitaj you can give the new road number 68 or higher.

The only thing that can be established in the road system is coding the direction (north/south and east/west) by number, for example you can use odd numbers for north/south roads and even numbers for east west.

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Comment from LemonKing on 2 December 2017 at 15:26

A realistic system would be consistent and inconsistent at the same time. Some RW examples from my country: In key cities some motorways are part of two ore more primary roads at the same time. Some key roads with double tracks are not classified as primary roads. Some roads have numbers but are not displayed in road signs, nor on maps, names are used in stead. Numbers start systematically from capital but some numbers are spread quite randomly throughout the country. Tertiary road numbers are usually created by adding a number to an adjacent secondary road, e.g 22 > 221. Key streets in city centres are often, not always, numbered as parts of main highways.

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Comment from Toadwart on 3 December 2017 at 01:27

There are so many ways to make a coherent numbering system. I could talk hours if someone wants to listen. I made a very cunning plan for my country itself. But anyway, what I miss, is a mechanism not to assign a number twice. You tend to forget the numbers already assigned.

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Comment from zhenkang on 3 December 2017 at 09:34

Every country got their own system.

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Comment from zhenkang on 3 December 2017 at 09:43

In Singkangia, there isn't really numbers, but names for roads. Even for motorways, the code is rather the abbreviation than a number like E1, E2 etc. (e.g. Selangte Expressway is STE, Odessa-Mariana Expressway is OME)

Maybe if your country have states, it should be slightly easier, like have a number for each state, e.g if your capital state the number is 1, then name any secondary road D1-XXX (with X being any digit after the dash). For cross-country routes you can give a special number, so long as it is not a number you give for any state. So like you have 12 states then you have already used numbers 1 to 12, then use the number 13 or something else for those roads.

  • Primary road in State 1- S1-009
  • Secondary road in State 3-D3-079
  • Tertiary road in State 12- 12-178
  • Cross-country Primary road- S13-005

Say, what about the trunk roads?

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Comment from ParAvion on 3 December 2017 at 22:49

An idea could be to break up the country into numbered zones, as is the case in countries like the UK, Germany, New Zealand, and in Victoria, Australia... and in the case of OGF, Vodeo. Number each zone 1 through 9, then work out from there. Major national highways should have lower (one- or two-digit) numbers, while less important ones have higher numbers. You can even go one step further and break each zone down into ten again, and then again until you achieve optimum road numbering.

Let's look at Vodeo for an example. Cambria is assigned the number 3, meaning all highways originating there have to begin with that number. The A3/M3 is a major highway that runs west to Radern and the border with TA004. It is one of the country's most important highways, so it has a very low number. For the next level down, Cambria is divided into ten zones - 30 for Longlac, 31 for Crafers, 32 for Marazan, and so on through to 39 for Pentland. Each zone has a major regional highway, such as the B33 in Brynderwyn or the A37 in the east. Then we go one step further and find roads that roughly correspond to a north-south or west-east pattern - the C330 is to the west (and kind of north, at least on the mainland) of the C331, then to the east we find the C332.

If you can't neatly divide your country into nine zones, then you can either assign multiple areas to a number, or multiple numbers to an area (Queensboro is in both 5 and 6 because it's large and there are ten provinces). As for how to arrange the zones, that's up to you. In Germany and New Zealand, they are arranged by geographical location (in New Zealand, Northland and Auckland are 1, while Southland is 9); in the UK they are assigned based on their direction from London or Edinburgh.

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Comment from CoffeeFaucet on 4 December 2017 at 05:49

I haven't tried any highway numbers yet, since I haven't built anything outside my capital city yet. I'm a big fan of doing odd numbers north-south and even numbers east-west, or the other way around. Of course, you have to use something that makes sense for the territory you have.

My territory (Concordia) is small and mostly rectangular. I definitely want to use the odd=N-S, even=E-W rule for highway numbers. I've thought about doing a grid or a grid-like system for the most important highways, and those may only go from 1 to 9. I haven't decided how to do highway numbers beyond that yet. It may be a while before I get to that point. I've also thought of lifting the A/B/M system from the UK, where the main roads are A highways, minor roads are B highways, and freeways are M highways. I like it better than the system in the US where Interstate 20 parallels US 80 - in my case M2 would parallel A2. Some Australian states add a C for tertiary roads. That's similar to the S/D/no letter system you have.

I highly recommend keeping a list of all the highway numbers and where they start and end. I keep lists of the streets in towns I've designed so I don't repeat street names.

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Comment from CoffeeFaucet on 4 December 2017 at 19:33

If you want to know how any place in the real world numbers their highways, Marcel Monterie's site has you covered.

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Comment from Alsatian on 27 January 2018 at 18:47

You could use some sort of system similar to the UK, by having different areas with different starting numbers.

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