Meaning of the response variables in Traffic Flow

Question

so i am using the here.developer api in order to get data on traffic for a given area. I am using proximity to get the radius. I have the api working with python using requests and i have it printing out the data. I am confused though on what the data means. For example, i get this

{
  "RWS": [
    {
      "RW": [
        {
          "FIS": [
            {
              "FI": [
                {
                  "TMC": {
                    "PC": 6084,
                    "DE": "Johnson Ave/Kinderkamack Rd",
                    "QD": "+",
                    "LE": 0.94082
                  },
                  "SHP": [],
                  "CF": [
                    {
                      "TY": "TR",
                      "SP": 46.38,
                      "SU": 46.38,
                      "FF": 49.21,
                      "JF": 0.47912,
                      "CN": 0.99
                    }
                  ]
                },
                {
                  "TMC": {
                    "PC": 6083,
                    "DE": "CR-503/Hackensack Ave",
                    "QD": "+",
                    "LE": 0.43574
                  },
                  "SHP": [],
                  "CF": [
                    {
                      "TY": "TR",
                      "SP": 39.15,
                      "SU": 39.15,
                      "FF": 49.15,
                      "JF": 1.69619,
                      "CN": 0.99
                    }
                  ]
                },
                {
                  "TMC": {
                    "PC": 6082,
                    "DE": "River Rd",
                    "QD": "+",
                    "LE": 0.3682
                  },
                  "SHP": [],
                  "CF": [
                    {
                      "SSS": {
                        "SS": [
                          {
                            "LE": 0.13436,
                            "SP": 35.11,
                            "SU": 35.11,
                            "FF": 49.4,
                            "JF": 2.41044
                          },
                          {
                            "LE": 0.23383,
                            "SP": 23.14,
                            "SU": 23.14,
                            "FF": 49.09,
                            "JF": 5.21289
                          }
                        ]
                      },
                      "TY": "TR",
                      "SP": 24.57,
                      "SU": 24.57,
                      "FF": 49.21,
                      "JF": 3.85751,
                      "CN": 0.99
                    }
                  ]
                },
                {
                  "TMC": {
                    "PC": 6081,
                    "DE": "Teaneck Rd",
                    "QD": "+",
                    "LE": 1.47647
                  },
                  "SHP": [],
                  "CF": [
                    {
                      "SSS": {
                        "SS": [
                          {
                            "LE": 0.54181,
                            "SP": 13.99,
                            "SU": 13.99,
                            "FF": 49.09,
                            "JF": 8.45597
                          },
                          {
                            "LE": 0.12603,
                            "SP": 22,
                            "SU": 22,
                            "FF": 49.09,
                            "JF": 5.79388
                          },
                          {
                            "LE": 0.80862,
                            "SP": 32.08,
                            "SU": 32.08,
                            "FF": 49.28,
                            "JF": 2.90814
                          }
                        ]
                      },
                      "TY": "TR",
                      "SP": 19.33,
                      "SU": 19.33,
                      "FF": 49.21,
                      "JF": 6.23169,
                      "CN": 0.99
                    }
                  ]
                }
              ]
            }
          ],
          "mid": "0a507b9f-0c71-425a-93ba-9cb2d1e91c48",
          "LI": "120-00219",
          "DE": "RT-4",
          "PBT": "2019-12-18T15:57:25Z"
        },
        {
          "FIS": [
            {
              "FI": [
                {
                  "TMC": {
                    "PC": 6082,
                    "DE": "River Rd",
                    "QD": "-",
                    "LE": 1.43747
                  },
                  "SHP": [],
                  "CF": [
                    {
                      "TY": "TR",
                      "SP": 49.71,
                      "SU": 49.84,
                      "FF": 49.71,
                      "JF": 0,
                      "CN": 0.99
                    }
                  ]
                },
                {
                  "TMC": {
                    "PC": 6083,
                    "DE": "CR-503/Hackensack Ave",
                    "QD": "-",
                    "LE": 0.61971
                  },
                  "SHP": [],
                  "CF": [
                    {
                      "TY": "TR",
                      "SP": 49.71,
                      "SU": 51.04,
                      "FF": 49.21,
                      "JF": 0,
                      "CN": 0.99
                    }
                  ]
                },
                {
                  "TMC": {
                    "PC": 6084,
                    "DE": "Johnson Ave/Kinderkamack Rd",
                    "QD": "-",
                    "LE": 0.42619
                  },
                  "SHP": [],
                  "CF": [
                    {
                      "TY": "TR",
                      "SP": 49.71,
                      "SU": 51.02,
                      "FF": 49.09,
                      "JF": 0,
                      "CN": 0.99
                    }
                  ]
                }
              ]
            }
          ],
          "mid": "70f7c3fd-51b0-43ed-916c-65b510791154",
          "LI": "120+00219",
          "DE": "RT-4",
          "PBT": "2019-12-18T15:56:39Z"
        }

I dont understand what most of there mean like "RWS", "FIS", "DE", "PC" "LE", "CF" "TY", "TR", and a bunch bunch more. Where can i find documentation on all this because i have searched and found nothing

@AlexanderCécile why would you say that? for python? sorry yeah youre prob right i just included it because im using python to get it my bad. — epinsten, Dec 18 '19 at 16:11
Stack Overflow is meant for specific technical problems, this is a question about documentation for some random company's API. It's explained much better here: [help/on-topic]. — AMC, Dec 18 '19 at 16:15
@AlexanderCécile yeah but they had a tag and linked it on their help so i figured it would be a good place to ask — epinsten, Dec 18 '19 at 16:20
https://developer.here.com/documentation/traffic/dev_guide/topics/common-acronyms.html — AMC, Dec 18 '19 at 16:23
@AlexanderCécile thank you appropriate your help. i actually found that before but it doesn't give the definition for all the acronyms that are in the response — epinsten, Dec 18 '19 at 16:52
https://stackoverflow.com/q/28476762/11301900, https://stackoverflow.com/q/22394499/11301900 — AMC, Dec 18 '19 at 17:12
@AlexanderCécile Thank you so much that is exactly what i was looking for. Thank you so much — epinsten, Dec 18 '19 at 17:16

score 1 · Answer 1 · answered Jan 28 '20 at 06:01

TMCCodeType holds a value of the typexs:string with the following restrictions:

Fixed length: 5 characters
Format: ECC+CCD+Table, where the following rules apply:

ECC is the Extended Country Code.
CCD is the TMC country code.
Table   is the defined TMC Table

You should find it under "Meta Resources" in the documentation, following should provide the required info

traffic.cit.api.here.com/traffic/6.0/xsd/flow.xsd?app_id=DemoAppId01082013GAL%20&app_code=AJKnXv84fjrb0KIHawS0Tg

developer.here.com/documentation/download/traffic_nlp/6.0.28.1/Traffic%20API%20v6.0.28.1%20Developer's%20Guide.pdf

score 0 · Answer 2 · answered Mar 16 '22 at 17:27

I've found in the hereR API some definitions that may help: """ The maximum width and height of the bounding box of the input AOIs is 10 degrees. This means that each polygon (= one row) in the AOI sf object should fit in a 10 x 10 degree bbox.

Explanation of the traffic flow variables:

"PC": Point TMC location code.

"DE": Text description of the road.

"QD": Queuing direction. '+' or '-'. Note this is the opposite of the travel direction in the fully qualified ID, For example for location 107+03021 the QD would be '-'.

"LE": Length of the stretch of road.

"TY": Type information for the given Location Referencing container. This may be a freely defined string.

"SP": Speed (based on UNITS) capped by speed limit.

"FF": The free flow speed on this stretch of the road.

"JF": The number between 0.0 and 10.0 indicating the expected quality of travel. When there is a road closure, the Jam Factor will be 10. As the number approaches 10.0 the quality of travel is getting worse. -1.0 indicates that a Jam Factor could not be calculated.

"CN": Confidence, an indication of how the speed was determined. -1.0 road closed. 1.0=100%. """

Meaning of the response variables in Traffic Flow

2 Answers2