Bing Truck Routing API - travelDistance units - bing-maps

Question

We're dipping our toes into the Truck Routing API, and have a question on the units used in the travelDistance element of the regionTravelSummary.
Example GET request
https://dev.virtualearth.net/REST/v1/Routes/Truck?wayPoint.1=85710&waypoint.2=80634&routeAttributes=regionTravelSummary&distanceUnit=mi&vehicleTrailers=1&key=
What's interesting is in the routeLegs.RegionTravelSummary, the travelDistance is not in Miles (or kilometers, or anything I can figure out). Here's a snippet of the JSON:
"regionTravelSummary":[
{
"name":"United States",
"subregions":[
{
"name":"Arizona",
"travelDistance":818486183.9,
"travelDuration":22151,
"travelDurationTraffic":22151
},
{
"name":"New Mexico",
"travelDistance":1019336643.92,
"travelDuration":19460,
"travelDurationTraffic":19460
},
{
"name":"Colorado",
"tollDistance":11959005.54,
"travelDistance":702204931.54,
"travelDuration":14428,
"travelDurationTraffic":14428
}
],
"tollDistance":11959005.54,
"travelDistance":2540027759.36,
"travelDuration":56038,
"travelDurationTraffic":56038
}
]
What am I looking at here? The travelDistance in the primary resources array is correctly showing 980 miles:
"trafficCongestion":"None",
"trafficDataUsed":"None",
"travelDistance":980.715076,
"travelDuration":56038,
"travelDurationTraffic":57776,
"travelMode":"Truck"
For this route, there should be 130 miles in Arizona, and 550 miles in New Mexico, and 300 for Colorado (+/- 40ish miles here or there depending on engine and settings).

Answer 1

Haven't seen that before. I've sent this thread to the engineering team to investigate. I also can't figure out for the life of me what those units are. Will update this post with any updates I hear.
Update
That team recently noticed this issue as well and are investigating a fix. They plan to have this fixed in production by end of next week.
Update 2
The Bing Maps team also asks that you direct technical support related questions to the Microsoft Q&A forums. The StackOverflow community often closes this type of questions as it's not meant to be a support channel. Here is the main technical forum for Microsoft enterprise mapping products: https://learn.microsoft.com/en-us/answers/topics/azure-maps.html