add restrictions

[thanchevici]

Obstacles class is not rich enough for a couple of use cases:

• as a user I want to ensure the route does not leave a defined area
• as a user I want to use restrictions that are both spatial and temporal
• as a user I want to use restrictions that are 3d (have vertical measurements)
• as a user I want to define areas where statically computed data is override by me. This is useful for cross-country route planning, where the server may use terrain coverage. The information on the server may indicate an area of marsh that has high cost and route around, or mark it as impassable, however weather conditions lead to dry land so I want to override the server.

Suggestion

• Rename to Restrictions, type array
• Restriction -- Simple polygon -- Optional start and end time -- Optional minimum and maximum vertical measurement (MSL/ELL) --Mandatory type (do not enter, do not leave, override static info – in summer marsh is passable) Replace
• http://www.opengis.net/spec/ogcapi-routes-1/1.0.0-draft.1/conf/obstacles With
• http://www.opengis.net/spec/ogcapi-routes-1/1.0.0-draft.2/conf/restrictions

{
   "restrictions":{
      "items":[
         {
            "type":"Polygon",
            "mode":"DO_NOT_ENTER",
            "start_time":"2022-02-24T13:00:00Z",
            "end_time":"2022-02-24T18:00:00Z",
            "coordinates":[
               [
                  [
                     [
                        -77.073211,
                        38.9023888
                     ],
                     [
                        -77.049522,
                        38.9023888
                     ],
                     [
                        -77.049522,
                        38.9104038
                     ],
                     [
                        -77.073211,
                        38.9104038
                     ],
                     [
                        -77.073211,
                        38.9023888
                     ]
                  ]
               ]
            ]
         },
         {
            "type":"Polygon",
            "mode":"DO_NOT_LEAVE",
            "coordinates":[
               [
                  [
                     [
                        -78.073211,
                        37.9023888
                     ],
                     [
                        -78.049522,
                        37.9023888
                     ],
                     [
                        -78.049522,
                        37.9104038
                     ],
                     [
                        -78.073211,
                        37.9104038
                     ],
                     [
                        -78.073211,
                        37.9023888
                     ]
                  ]
               ]
            ]
         }
      ]
   }
}

{
   "restrictions":{
      "items":[
         {
            "type":"Polygon",
            "mode":"OVERRIDE",
            "start_time":"2022-02-24T13:00:00Z",
            "end_time":"2022-02-24T18:00:00Z",
            "coordinates":[
               [
                  [
                     [
                        -77.073211,
                        38.9023888
                     ],
                     [
                        -77.049522,
                        38.9023888
                     ],
                     [
                        -77.049522,
                        38.9104038
                     ],
                     [
                        -77.073211,
                        38.9104038
                     ],
                     [
                        -77.073211,
                        38.9023888
                     ]
                  ]
               ]
            ]
         },
         {
            "type":"Polygon",
            "mode":"DO_NOT_ENTER",
            "start_time":"2022-02-24T13:00:00Z",
            "coordinates":[
               [
                  [
                     [
                        -78.073211,
                        37.9023888
                     ],
                     [
                        -78.049522,
                        37.9023888
                     ],
                     [
                        -78.049522,
                        37.9104038
                     ],
                     [
                        -78.073211,
                        37.9104038
                     ],
                     [
                        -78.073211,
                        37.9023888
                     ]
                  ]
               ]
            ]
         }
      ]
   }

The server will report if it supports override restrictions

Thank you Teodor

[cportele]

Maybe remove the "obstacles" requirements class from version 1.0 and take the time to discuss a proper "restrictions" requirements class either in a version 1.1 or another part?

[cportele]

Meeting 2022-11-22: This more general approach makes sense, but will likely require more discussion and probably testing before we can finalize this. We will remove the "Obstacles" requirements class from version 1.0 and take the time to discuss a proper "Restrictions" requirements class in a version 1.1 with priority.

[thanchevici]

Everyone: I discussed internally and there is more feedback with respect of restrictions. All these come from practical use cases:

• Can you have a linear obstacle? Eg. A cliff -- I would vote "yes" as in practice rivers and other features are linear
• Restrictions are hard go/no-go areas. Can soft cost penalties be added to obstacles to prevent route from getting too close to them in the routing environment or is this the responsibility of the route server? -- I would add a buffer to the obstacle, with linear increase of cost or similar
• How can under lying cost data be modified? e.g. road network might give upper speed limit for the roads but the user knows the area is covered in dense fog so speed limits are unrealistic or is this the responsibility of the route server -- I would consider the "override" option here to indicate that conditions changed, but make the server responsibility
• how to pass weather information -- again override, or similar, but we need to discuss more