diff --git a/erpnext/hr/doctype/vehicle/vehicle.py b/erpnext/hr/doctype/vehicle/vehicle.py
index a75cfa6..57e2594 100644
--- a/erpnext/hr/doctype/vehicle/vehicle.py
+++ b/erpnext/hr/doctype/vehicle/vehicle.py
@@ -13,4 +13,11 @@
 		if getdate(self.start_date) > getdate(self.end_date):
 			frappe.throw(_("Insurance Start date should be less than Insurance End date"))
 		if getdate(self.carbon_check_date) > getdate():
-			frappe.throw(_("Last carbon check date cannot be a future date"))
\ No newline at end of file
+			frappe.throw(_("Last carbon check date cannot be a future date"))
+
+def get_timeline_data(doctype, name):	
+	'''Return timeline for vehicle log'''
+	return dict(frappe.db.sql('''select unix_timestamp(date), count(*)
+	from `tabVehicle Log` where license_plate=%s
+	and date > date_sub(curdate(), interval 1 year)
+	group by date''', name))