diff -r 4f8a67d5d79e -r 5fd79554c3aa service.py
--- a/service.py	Wed Dec 06 22:47:45 2017 +0200
+++ b/service.py	Thu Dec 07 16:55:44 2017 +0200
@@ -268,7 +268,7 @@
 		bus_stop = bus_stops[reference]
 	except KeyError:
 		abort(404)
-	for i, schedule_entry in enumerate(bus_stop.schedule_for_day(today(), arrivals = False)[:6]):
+	for i, schedule_entry in enumerate(bus_stop.schedule_for_day(today(), arrivals = False)):
 		schedule.append({
 			'time_data': schedule_entry['time'],
 			'time': time_representation(schedule_entry['time']),
@@ -281,6 +281,17 @@
 		})
 	from pprint import pprint
 	pprint(schedule)
+	def destination_key(schedule_entry):
+		sign = schedule_entry['sign']
+		return (sign['destination'],) + tuple(sign['via'])
+	def filter_schedule(schedule, *, key):
+		used = set()
+		for schedule_entry in schedule:
+			key_value = key(schedule_entry)
+			if key_value not in used:
+				used.add(key_value)
+				yield schedule_entry
+	schedule = list(filter_schedule(schedule, key = destination_key))[:6]
 	if schedule:
 		num_imminent_leaves = max(1, len([schedule_entry for schedule_entry in schedule if schedule_entry['time_data'] - schedule[0]['time_data'] < timedelta(minutes = 3)]))
 	else: