diff --git a/traffic-a22-data-quality/checks.sql b/traffic-a22-data-quality/checks.sql
new file mode 100644
index 00000000..81f8ae31
--- /dev/null
+++ b/traffic-a22-data-quality/checks.sql
@@ -0,0 +1,22 @@
+/* Check consistency for total and equiv data types */
+select ml.timestamp, s.stationcode, s.stationtype,
+ml.double_value as "light", 
+mh.double_value as "heavy",
+mb.double_value as "bus",
+mt.double_value as "total",
+me.double_value as "equiv",
+(ml.double_value + mh.double_value + mb.double_value) as calc_total,
+(ml.double_value + mh.double_value * 2.5 + mb.double_value * 2.5) as calc_equiv
+from station s
+join type l on l.cname = 'Nr. Light Vehicles'
+join measurement ml on ml.type_id = l.id and ml.station_id = s.id and ml.period = 86400
+join type h on h.cname = 'Nr. Heavy Vehicles'
+join measurement mh on mh.type_id = h.id and mh.station_id = s.id and mh.period = 86400 and mh.timestamp = ml.timestamp
+join type b on b.cname = 'Nr. Buses'
+join measurement mb on mb.type_id = b.id and mb.station_id = s.id and mb.period = 86400 and mb.timestamp = ml.timestamp
+join type e on e.cname = 'Nr. Equivalent Vehicles'
+join measurement me on me.type_id = e.id and me.station_id = s.id and me.period = 86400 and me.timestamp = ml.timestamp
+join type t on t.cname = 'Nr. Vehicles'
+join measurement mt on mt.type_id = t.id and mt.station_id = s.id and mt.period = 86400 and mt.timestamp = ml.timestamp
+where stationcode like 'A22:%' and stationtype in ('TrafficDirection','TrafficSensor')
+order by s.stationcode, ml.timestamp desc
\ No newline at end of file