Hi,
It appears that the ecargobike profile cannot access private roads. As cargo bikes are often used for deliveries, I think it makes sense to allow ecargobike to access private roads, similar to car_delivery or small_truck_delivery (or alternatively an ecargobike_delivery).
Here is an example where a cargo bike cannot access the delivery address and is instead routed to a nearby road (from which the address isn’t accessible).
{
"points": [
[
-0.154874,
51.568134
],
[
-0.155372,
51.569838
]
],
"snap_preventions": [
"motorway",
"ferry",
"tunnel"
],
"details": [
"road_class",
"surface"
],
"profile": "ecargobike",
"locale": "en",
"instructions": true,
"calc_points": true,
"points_encoded": false
}