diff --git a/server/src/types.ts b/server/src/types.ts
index f24f2dea7..1f0f601ce 100644
--- a/server/src/types.ts
+++ b/server/src/types.ts
@@ -111,6 +111,7 @@ export interface DayAssignment {
   assignment_time?: string | null;
   assignment_end_time?: string | null;
   leg_transport_mode?: string | null;
+  incoming_leg_transport_mode?: string | null;
   created_at?: string;
 }
 
diff --git a/shared/src/assignment/assignment.schema.ts b/shared/src/assignment/assignment.schema.ts
index abf6bdf02..0a70fe069 100644
--- a/shared/src/assignment/assignment.schema.ts
+++ b/shared/src/assignment/assignment.schema.ts
@@ -43,6 +43,10 @@ export const assignmentSchema = z.object({
   // Per-segment travel mode (#1281): the transport mode of the leg LEAVING this
   // stop for the next one. null = inherit the day's default_transport_mode.
   leg_transport_mode: z.string().nullable().optional(),
+  // Per-segment travel mode of the leg ENTERING this stop when its origin is
+  // not a place (booking arrival / morning hotel). null = inherit the day default.
+  // Inert when the previous timeline element is a place.
+  incoming_leg_transport_mode: z.string().nullable().optional(),
   participants: z.array(assignmentParticipantSchema).optional(),
   created_at: z.string().optional(),
   place: assignmentPlaceSchema,