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nuklearelement's Diary

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Revamping M5 motorway in Brisbane, Australia.

Posted by nuklearelement on 11 May 2018 in English (English). Last updated on 8 November 2018.

This entry is for my reference and for anyone who is interested in cleaning their motorways.

I have decided to do some clean ups and fixes along a motorway (mostly linking roads) here in Australia. I think this is important for GPS usage, or otherwise clarity sake whilst viewing. I want to list the things I did to cleanup and otherwise improve.

Fixing Roads

This one should come as no surprise. It is important to use a good imagery source and offset by GPX. Keep in mind that people driving will be in different lanes, so align the road to be in the centre of this.

Different lanes should not be mapped as individual ways.

Use of destination tags on linking roads and junctions (e.g. offramps and onramps)

This one is important for GPS navigation. Here are the tags that I’m going with:

destination= This tag is for whatever the sign says, I reserve this one mostly for a Suburb or City name. Use a semicolon to separate multiple names: City 1;City 2. Mapillary and OpenStreetCam help here.

destination:street= The name of the road that is at the end of the linking road.

destination:ref= The reference number of the road that is at the end of the linking road.

destination:network= I think this one is unofficial, but I use this if the destination has a network.

Adding/Improving junctions

Someone has already done a good job at adding most. However where I am, motorway junction nodes are only present when the exit has a ref number (e.g. Exit 32). This isn’t good for exits which don’t have numbers. So to areas which didn’t have any. I’ve added them and used the destination tag on them instead.

I have also added destinations tags to existing ones where needed. These were placed as per the wiki’s instruction.

Making transition roads at junction

Although the placement=transition tag isn’t official, I like to use it on the slight bit of road that connects the motorway to the motorway_link road.

An example image from the wiki

Another big clean-up here involved, putting the junctions at the last legal turn off.

Location: Fig Tree Pocket, Brisbane City, Queensland, 4073, Australia

This is a volunteer event that will take place at Toowong Library from 09:00 - 13:00 on Sunday 4th of March.

Schedule:

We’ll be mapping throughout the afternoon, in addition to:

09:00: Registration & set-up

09:15: Introduction to OpenStreetMap and the Missing Maps project

09:30: OpenStreetMap/Missing Maps Training

10:00: Snack break (snacks provided!)

10:30: Mapping

11:30: Lunch break

13:00: Wrap-up and farewell

What is it?

The aim of the Missing Maps Project is to map the most crisis-prone parts of the developing world. With your help we can directly improve the lives of some of the planet’s most vulnerable people. Both beginners and experienced mappers are welcome to join this mapathon, please choose your ticket according to your level of mapping skills.

Where will we be mapping?

We will be mapping high priority tasks from the HOT Tasking Manager.

What do I need?

Just a laptop (please bring your own with you), a mouse and enthusiasm (mouse isn’t absolutely necessary but makes the mapping A LOT faster).

Where is it?

We’re very kindly hosted by the Toowong Library, located in Toowong Village Shopping Centre at 9 Sherwood Rd, Toowong, or http://www.openstreetmap.org/way/529373044 in OpenStreetMap.

Location: Toowong, Brisbane City, Queensland, 4066, Australia