diff --git a/index.ts b/index.ts
index 6f45e10..121cf1a 100644
--- a/index.ts
+++ b/index.ts
@@ -3,7 +3,7 @@ export { Corpus } from './src/database/corpus'
 export { Pis } from './src/database/pis'
 export { ReasonCode } from './src/database/reasonCode'
 export { Station } from './src/database/station'
-export { Service, Stop, SimpleService } from './src/database/timetable'
+export { Service, Stop, SimpleService, ServiceDetail } from './src/database/timetable'
 export { User } from './src/database/user'
 
 // Downstream API
diff --git a/src/database/timetable.ts b/src/database/timetable.ts
index 86e1f85..a6a61c2 100644
--- a/src/database/timetable.ts
+++ b/src/database/timetable.ts
@@ -31,10 +31,15 @@ interface Service {
     scheduleEndDate:   Date;
     daysRun:           string[];
     stops:             Stop[];
-    vstp:              boolean;
-    firstClass:        boolean;
-    catering:          boolean;
-    sleeper:           boolean;
+    serviceDetail:     ServiceDetail;
 }
 
-export { Stop, Service, SimpleService }
\ No newline at end of file
+interface ServiceDetail {
+    firstClass: boolean;
+    catering: boolean;
+    sleeper: boolean;
+    vstp: boolean;
+    guard: boolean
+}
+
+export { Stop, Service, SimpleService, ServiceDetail }
\ No newline at end of file