diff --git a/README.md b/README.md
index e3eb2fe..00a9567 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,14 @@
This repository is made for collecting line colors in public transport lines,
so they can be displayed on systems using DB HAFAS.
-## Structure
+## Contents
+
+- [Line Colors](#line-colors)
+- [Product Brands](#product-brands)
+
+## Line Colors
+
+### Structure
The `line-colors.csv` contains several columns:
- `shortOperatorName`: Short operator name (i.e. vehicle keeper marking/"Halterkürzel" or another identifier for EVU) and a local transport network abbreviation
@@ -20,8 +27,9 @@ The `line-colors.csv` contains several columns:
- `pill`: Rectangle with completely rounded corners
- `trapezoid` A trapezoid shape with a broad top and a narrow bottom side
- `wikidataQid`: Wikidata QID for the line (if available, can be empty)
+- `productBrand`: An optional `shortOperatorName` from the product brands database in order to manually assign a particular product brand override. This is useful if e.g. an operator runs a single line entering another traffic association using different branding, such as DB Regio operating for Austrian S-Bahn networks.
-## Contributing
+### Contributing
If a line operates in a local transport network/"Verkehrsverbund", the network's line color shall be preferred.
Local transport networks usually have line colors for:
@@ -54,7 +62,7 @@ Please keep the PR's small. If possible, create a small PR for each operator.
\ No newline at end of file
diff --git a/products/rer-ch-fribourg.svg b/products/rer-ch-fribourg.svg
new file mode 100644
index 0000000..fdc8843
--- /dev/null
+++ b/products/rer-ch-fribourg.svg
@@ -0,0 +1 @@
+
\ No newline at end of file
diff --git a/products/rer-ch-vaud.svg b/products/rer-ch-vaud.svg
new file mode 100644
index 0000000..9b82e8e
--- /dev/null
+++ b/products/rer-ch-vaud.svg
@@ -0,0 +1 @@
+
\ No newline at end of file
diff --git a/products/s-bahn-at.svg b/products/s-bahn-at.svg
new file mode 100644
index 0000000..7d6980c
--- /dev/null
+++ b/products/s-bahn-at.svg
@@ -0,0 +1 @@
+
\ No newline at end of file