diff --git a/docs/architecture/spillback/spillback.rst b/docs/architecture/spillback/spillback.rst
index 91d388f..fa4e6ef 100644
--- a/docs/architecture/spillback/spillback.rst
+++ b/docs/architecture/spillback/spillback.rst
@@ -41,3 +41,12 @@ At each revision, the predicted discharge rate of the edge is updated based on w
 
 .. warning::
    TODO: Check if the timing of the revisions could be improved by accounting for the difference in travel time or travel utility between the route chosen and the second-best alternative (this is more difficult with stochastic route choice).
+
+Revisions v2
+------------
+
+Common data: exit rate of a road full to capacity.
+This is used to compute route choice.
+
+The exit rate is update e.g., every 30 seconds.
+When the exit rate is updated, the first vehicle in the queue can revise its choice.