diff --git a/supabase/migrations/20260713000003_transport_incident_type.sql b/supabase/migrations/20260713000003_transport_incident_type.sql
new file mode 100644
index 0000000..ed82a9c
--- /dev/null
+++ b/supabase/migrations/20260713000003_transport_incident_type.sql
@@ -0,0 +1,3 @@
+-- Add 'transport' to the incident_type enum. Isolated so the new value is
+-- committed before any later migration references it.
+ALTER TYPE incident_type ADD VALUE IF NOT EXISTS 'transport';
diff --git a/supabase/migrations/20260713000004_trucks.sql b/supabase/migrations/20260713000004_trucks.sql
new file mode 100644
index 0000000..68c750f
--- /dev/null
+++ b/supabase/migrations/20260713000004_trucks.sql
@@ -0,0 +1,14 @@
+CREATE TABLE trucks (
+  id         UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+  truck_no   TEXT NOT NULL UNIQUE,
+  carrier    TEXT,
+  active     BOOLEAN NOT NULL DEFAULT true,
+  created_at TIMESTAMPTZ NOT NULL DEFAULT now()
+);
+
+ALTER TABLE incidents ADD COLUMN truck_id UUID REFERENCES trucks(id);
+CREATE INDEX incidents_truck_id_idx ON incidents(truck_id);
+
+ALTER TABLE trucks ENABLE ROW LEVEL SECURITY;
+CREATE POLICY "trucks_read"      ON trucks FOR SELECT USING (true);
+CREATE POLICY "trucks_admin_all" ON trucks FOR ALL    USING (auth_user_role() = 'admin');