Road Classification System (talk & poll)

I ran some tests the last couple of days. I downloaded the whole Greek road network (even unclassified roads) and I tried to simulate the next 3 cases. After that, I ran some routing tests for each case. (Testing cases was only for provincial roads)

Case 1: tertiary: all provincial roads.
Result: A vast network of tertiary roads, very confusing to the eye, and even worse on islands. Many routing problems.

Case 2: secondary: primary provincial roads and tertiary: secondary provincial roads.
Result: Better looking map than case 1, less confusing to the eye. Some routing problems solved.

Case 3: secondary: all provincial roads.
Result: Good looking map, minor roads to villages were distinctive. Islands were looking very good too. Almost all routing problems solved.

To define what I mean by “routing problems” i will give just an example that caught my eye, among many others. At the map below there are 2 provincial roads. ΕΠ7 (primary provincial road) and ΕΠ30 (secondary provincial road ).

In the above cases 1&2, to go from Κεντρικό village to Δεσύλλας village, routing was going through the small tertiary road that connects these two villages directly.

In case 3, routing was going though the secondary roads. (as it should be)
Map is here http://www.openstreetmap.org/#map=14/37.2951/21.9784

So my conclusion is that all provincial roads must be tagged at least as secondary roads.
Other minor roads to villages and other priority roads must be tagged as tertiary, as they are now.
Of course secondary national roads must be tagged as primary

Please give me some time to study what we can do about tertiary national roads.
(Greek road network is really a pain in the ass :))

I also think that mtraveller’s opinion, about downgrading some roads to tertiary, must be taken into account as it adds some flexibility to the system. But keep in mind that by downgrading roads, routing problems can emerge easily. Anyway, we can discuss about exceptions later.

PS. I think that voting system is too confusing. (or is just me?).

The voting system is too confusing.

There has to be a special reason for downgrading classified roads below the minimum (e.g. cars banned in Hydra). Just because it is single lane does not justify downgrade if it is good quality.

deleted poll

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Poll 1: Conditional A+B Specifically, any major or motorway-like priority roads between other primary national roads, such as the old A65 in Athens. The importance of a network is essential.

Poll 2: B. Too many tertiary roads will cause confusion.

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just vote already, to see where we stand

i don’t think others will come (i invited at least 8 people to join the conversation, but i dont see them)

it’s not so difficult for 4 people to reach an agreement

i think we have to remove replies to the old polls to avoid confusion

EDIT1: i updated the list of national highways in the wiki:
http://wiki.openstreetmap.org/wiki/WikiProject_Greece/Highways

as i noticed the tertiary national network comprises mostly by old or minor national highways that are rather insignificant…so i think they could be in the same category as primary provincial

as i understand highway=tertiary causes problems to the routing, so we better not use it for any national or primary provincial roads

Yes it’s difficult for 4 people to reach an agreement. And because you did not posted a clearer voting system, i’m sorry that i will post my own.
EDIT: And i can’t find my choice in any of your voting systems

Trunk (1)=
a) primary national network
f) roads planned to become motorways defined in ΦΕΚ 253ΑΑΠ/2015
g) motorway-like roads

Primary(2)=
b) secondary national network
c) tertiary national network
d) primary provincial network

Secondary(3)=
c) tertiary national network
d) primary provincial network
e) secondary provincial network

Tertiary(4)=
d) primary provincial network
e) secondary provincial network
o) none of the above (just minor roads)

Voting must be like this (for example):
1=a+f or 1=a etc
2=b+c
3=d+e
4=o
each letter (a,b,c,d,e) is a unique network, other letters are complementary
note that the letter(s) of your choice can’t be in more than one categories

my proposal is this:
trunk - primary national network + motorway-like roads + roads planned to become motorways
primary - secondary national network
secondary - tertiary national network + primary provincial
tertiary - secondary provincial + roads connecting villages

So JayCBR voted:

1=a+f+g
2=b
3=c+d
4=e

1=a+f
2=b+d
3=c+e
4=o

Actually this is right (my research agrees with it). So, tertiary national roads must be tagged as secondary.
Don’t worry about stacking three networks into secondary tag. This tag can afford it, because it can show the least important roads but at the same time it can show that they are still important.

So, my vote is

1=a+f trunk= (primary national network + roads planned to become motorways)
2=b primary= (secondary national network)
3=c+d+e secondary= (tertiary national network +whole provincial network)
4=o tertiary= (minor roads)

EDIT: Descriptions added

So far we have: (red numbers in parentheses are number of votes)

1=a (4) +f (4) +g (1)
2=b (5) +d (1)
3=c (4) +d (3) +e (3)
4=o (3) +e (1)

Last voter: mtraveller

Don’t be confused by this table, it’s just for reference reasons. We will wait for other members to vote too.

Here is my vote:

1=a+f trunk = primary national + roads to become motorways
2=b primary = secondary national
3=c+d+e secondary = tertiary national + primary provincial + secondary provincial
4=o tertiary = minor roads

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Notes: Regarding C (tertiary national) I trust JayCBR’s and nikospag’s confirmation of their actual definition as “replaced” by ΠΔ401/1993. Also, with d+e I am referring to the whole provincial network, including the provincial roads on the islands which are neither, as there was “no need” for this distinction according to ΦΕΚ 423Β/1995. Thank you all for your brilliant work and research!

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so we wait until end of the month for more replies

i am also thinking we need a poll for road names (outside of cities)

about street names inside cities i believe we are on the same page:
name=Δημοκρατίας (omit οδός or λεωφόρος)
int_name=Dimokratias (omit οδός or λεωφόρος)

i don’t think name:en=Democracy avenue etc is right

EDIT1:please remove text concerning removed polls, to avoid confusion for potential readers

Yes, we are on the same page about all of these. And i think that most of us are too. If i’m wrong please correct me.

There are too many things in this thread. I think the street names should go in a separate thread.