You must search the test segment in Bus test API(V9), please check the below bus test segment:
Bus Test Segment:
{
"ClientId": "XXXXXX",
"UserName": "XXXXXX",
"Password": "XXXXXXX",
"FromCityCode": "19402",
"ToCityCode": "8875",
"DepartDate": "XXXX-XX-XX"
}