Custom Models with Specific Road Names

[alamaranka]

Hi there,

I’m relatively new to GH, but find it very powerful tool.

My question is about using specific road names in custom model JSONs. I tried “road_name” key which turned out to be invalid. Please find an example below.

{
    "priority": [
        {
            "if": "!car_access",
            "multiply_by": "0"
        },
        {
            "if": "road_access == PRIVATE",
            "multiply_by": "0.1"
        }
    ],
    "speed": [
        {
            "if": "road_class == MOTORWAY && road_name == Anadolu Otoyolu",
            "limit_to": 70
        },
        {
            "else_if": "road_class == TRUNK",
            "limit_to": 50
        },
        {
            "else_if": "road_class == PRIMARY",
            "limit_to": 30
        },
        {
            "else_if": "road_class == SECONDARY",
            "limit_to": 25
        },
        {
            "else_if": "road_class == TERTIARY",
            "limit_to": 20
        },
		{
            "else_if": "road_class == RESIDENTIAL",
            "limit_to": 15
        },
        {
            "else": "",
            "limit_to": 60
        }
    ]
}

![Screenshot_2|237x500](upload://wpBSTsEf3G5FGNH2IrzSPBq9u3m.png)

[simse]

what is your goal? why would you need the road names?

the available encoded values / road attributes show up if you press STRG + SPACE

more info here:

graphhopper/graphhopper/blob/master/docs/core/custom-models.md#edge-attributes-used-by-graphhopper-encoded-values

[easbar]

This is a valid use case: changing the speed of bigger motorway by name. Unfortunately currently there is no support for selecting roads by name in a custom model. A possible workaround might be drawing an area around the motorway and using the ‘areas’ feature of the custom model.

[alamaranka]

Suppose I have historical GPS data collected from vehicle tracking system for a set of vehicles. Naturally, vehicles tend to use same roads within the city. To integrate actual traffic data, I need to be able assign average speeds to specific road segments, depending on the time of the day and the day of week, etc.