diff --git a/app/eva_common.py b/app/eva_common.py
index 24956d9..b047075 100644
--- a/app/eva_common.py
+++ b/app/eva_common.py
@@ -710,7 +710,7 @@ def calc_tide_index(crossid, nodeid, date_list, roads_dir_dict, date_type=None):
         if max_pm_flow_road == '' or max_pm_flow_road not in subtend_road_pair.keys():
             tide_index_list.append(tide_index)
             continue
-        subtend_road_pm_flow = pm_inroad_info_dict[subtend_road_pair[max_pm_flow_road]].delay_info.car_num
+        subtend_road_pm_flow = pm_inroad_info_dict[subtend_road_pair[max_pm_flow_road]].delay_info.car_num if subtend_road_pair[max_pm_flow_road] in pm_inroad_info_dict.keys() else 0
         if min(subtend_road_pm_flow, max_pm_flow) < 10:
             tide_index_list.append(tide_index)
             continue