diff --git a/3.5.-request=bikes_available.md b/3.5.-request=bikes_available.md
index 8763880..3737a58 100644
--- a/3.5.-request=bikes_available.md
+++ b/3.5.-request=bikes_available.md
@@ -29,6 +29,19 @@ Query of the available rental bikes with the optional specification **station**
 | authed         | +        | text  | if 1 then authenticated request on operator      |
 | tariff_description         | +        | array  | bike Tariff description      |
 
+**tariff_description** JSON Object
+| key          | Required | Format           | Comment                        |
+| ------------------ | -------- | ---------------- | -------------------------- |
+| name       | +          | text                 | Tarif name                         |
+| number    | +          | text                 | Tarif number                       |
+| eur_per_hour    | +          | text                 | EUR per hour                    |
+| free_hours          | +          | text   | free hours per bike per day          |
+| max_eur_per_day  | +          | text                 | max EUR per day                |
+| abo_eur_per_month   | +          | text                 | EUR per month by Abo   |
+| track_info   | +          | text                 | GPS tracking message               |
+| operator_agb   | +          | text                 | Operator AGB message and href  |
+
+
 Example
 **REST request=bikes_available** for authorized users
 ```