Getting speed limit based on a single coordinate using here REST API - rest

Question

I want to retrieve speed limit based on a single coordinate(of a road in the USA) using HERE REST API(not PDE). So, I only got the api_key(no app code). I searched and found some solutions which were deprecated and required the PDE api. If anybody knows the latest solution please let me know. Thanks. Anyway I got something which gives speed limit for two coordinates(not my case) and if I put the two coordinates same I get the wrong(very small) value for speed limit. which is given bellow:
https://router.hereapi.com/v8/routes?apiKey=APP_KEY&transportMode=car&origin=-37.956650,145.220673&destination=-37.956650,145.220673&spans=speedLimit&return=polyline
{
"routes": [
{
"id": "0a903f38-aecd-4850-a87e-0848c7583b8a",
"sections": [
{
"id": "4aa23cb0-0209-4e31-bca8-32f4cfb9f98e",
"type": "vehicle",
"departure": {
"time": "2021-02-25T12:52:34+11:00",
"place": {
"type": "place",
"location": {
"lat": -37.9566675,
"lng": 145.2206532
},
"originalLocation": {
"lat": -37.9566501,
"lng": 145.220673
}
}
},
"arrival": {
"time": "2021-02-25T12:52:34+11:00",
"place": {
"type": "place",
"location": {
"lat": -37.9566675,
"lng": 145.2206532
},
"originalLocation": {
"lat": -37.9566501,
"lng": 145.220673
}
}
},
"polyline": "BG1j2soC6iy_0IAA",
"spans": [
{
"offset": 0,
"speedLimit": 27.7777786
}
],
"transport": {
"mode": "car"
}
}
]
}
]
}
Is there any latest rest api service provided by Here that gives speed limit for a geo coordinate(not the pde one)?