diff --git a/homepage/participo/lib/participoLib/participo.php b/homepage/participo/lib/participoLib/participo.php
index 74958d4..1f5181a 100644
--- a/homepage/participo/lib/participoLib/participo.php
+++ b/homepage/participo/lib/participoLib/participo.php
@@ -506,7 +506,10 @@ function logLoginsToJsonFile($userName, $fileName = 'lastLogins.json')
 		if (!array_key_exists('lastLogins', $lastLogins[$userName])) {
 			$lastLogins[$userName]['lastLogins'] = [];
 		}
-		$lastLogins[$userName]['lastLogins'] = array_merge([date('Y-m-d H:i:s')], $lastLogins[$userName]['lastLogins']);
+		$usersLastLogins = $lastLogins[$userName]['lastLogins'];
+		$usersLastLogins = array_merge([date('Y-m-d H:i:s')], $usersLastLogins);
+		$usersLastLogins = array_slice($usersLastLogins, 0, 10);
+		$lastLogins[$userName]['lastLogins'] = $usersLastLogins;
 		file_put_contents($fileName, json_encode($lastLogins));
 	} catch (Exception $e) {
 		// silently ignore errors
diff --git a/homepage/participo/lib/participoLib/ride.php b/homepage/participo/lib/participoLib/ride.php
new file mode 100644
index 0000000..46b9f3f
--- /dev/null
+++ b/homepage/participo/lib/participoLib/ride.php
@@ -0,0 +1,147 @@
+<?php
+
+require_once 'participoLib/participo.php';
+
+/** Frame for a variable synced with a db*/
+class PdoCellValue{
+    public function __construct(string $name, $value, $type){
+        $this->name = $name;
+        $this->value = $value;
+        $this->type = $type;
+    }
+    static public function collect(array $row){
+        $names = [];
+        foreach($row as $entry){
+            if(isset($entry->name)){
+                $names[] = $entry->name;
+            }
+        }
+        return $names;
+    } 
+    public function value(){return $this->value;}
+    public function setValue($value){$this->value = $value;}
+    private string $name = null;
+    private $value = null;
+    private int $data_type = null;
+}
+
+class Ride{
+    /** Constructor
+     * 
+     * - filters/sanitizes all inputs
+     * - sets all members
+     *
+     * @param mixed $id setValue for the id
+     * @param mixed $eventId setValue for the eventId
+     * @param mixed $driverId setValue for the driverId
+     * @param mixed $seats setValue for the seats
+     * @param string $passengerIds string of comma separated values
+     */
+    public function __construct($id, $eventId, $driverId, $seats, string $passengerIds){
+        $this->id =           new PdoCellValue('id',        filterId($id),                      PDO::PARAM_INT);
+        $this->eventId =      new PdoCellValue('eventId',   filterId($eventId),                 PDO::PARAM_INT);
+        $this->driverId =     new PdoCellValue('fahrerId',  filterId($driverId),                PDO::PARAM_INT);
+        $this->seats=         new PdoCellValue('plaetze',   filterCount($seats),                PDO::PARAM_INT);
+        $this->passengerIds = new PdoCellValue('mitfahrer', filterCsv($passengerIds, filterId), PDO::PARAM_STRING);
+    }
+
+    /** parse and sanitize a csvFormatted string */
+    function filterCsv(string $list, $callback, string $separator=',', bool $dontTrim = false){
+        $list = explode($separator, $list);
+        foreach($list as &$element){
+            $element = $callback($element);
+            if(!$dontTrim){
+                $element = trim($element);
+            }
+        }
+        return $list;
+    }
+
+////
+// private functions
+////
+
+// DbInterface
+    private static $dbName = 'cwsvjudo';
+    private static $dbTableName = 'wkParticipo_Fahrten';
+    private static $dbFullTableNameString = '`'.$dbName.'`.`'.$dbTableName.'`';
+
+    /** Slice a list of arrays 'horizontal' through a specific key 
+     *
+     * - iterate through a list of arrays and collect the values under a specific key
+     * - if the key doesn't exist nothing (not even null) will be collected
+     * 
+     * @param array $array source array
+     * @param mixed $key key to collect
+     * @return array list of array entries
+     */
+    function sliceArrayByKey(array $array, $key){
+        $sliced = [];
+        foreach($array as $entry){
+            if(isset($entry[$key])){
+                $sliced[] = $entry[$key];
+            }
+        }
+        return $sliced;
+    }
+
+    private static function dbSelect(){}
+    private static function dbInsert(array $values){
+        $names = [];
+        $binds = [];
+        $params = [];
+        foreach($values as $value){
+            $names[] = $value->name;
+            $binds[] = ':'.$value->name;
+            $params[':'.$value->name] = [
+                'value' => $value->name
+                , 'data_type' => $value->type
+            ];
+        }
+
+        $query = 'INSERT INTO '.$dbFullTableNameString.' ('.implode(',', $names).') values ('.implode(',', $binds).');';
+
+        // @todo remove ignoreErrors again
+		// @todo Inserting-Starter-Statement returns false on execution: Why? It seems to succeed! 
+		$response = dbConnector::query($query, $params, ['ignoreErrors'=>true]);
+		return dbConnector::getLastInsertId();
+    }
+    private static function dbDelete(){}
+    private static function dbUpdate(){}
+
+    private 
+
+////
+// private variables
+////
+
+    /** Unique Identifier for the Ride
+     *
+     * @var int > 0
+     */
+    private $id=null;
+    /** Id of the event for the ride
+     *
+     * @var int > 0
+     */
+    private $eventId = null;
+    /** Id of the user who offered the drive
+     *
+     * @var int > 0
+     */
+    private $driverId = null;
+    /** number of seats the drive offers
+     *
+     * @var int > 0
+     */
+    private $seats = null;
+    /** List of Ids of the users this ride chauffeurs
+     *
+     * @var array(int > 0)
+     */
+    private $passengerIds = null;
+
+    private $event = null;
+    private $driver = null;
+    private $passengers = null;
+}
\ No newline at end of file