diff --git a/config/routes.rb b/config/routes.rb
index 765612b..c962550 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -1,4 +1,4 @@
-if File.basename($0) != 'rake'
+if ENV['worker_num']=='0' && File.basename($0) != 'rake'
   Thread.new do
     update_route_interval = RulingBusSetting.first.update_route_interval
     while 1