final private function getTrafficData($feedUrl)
    {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $feedUrl);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        $response = curl_exec($ch);
        curl_close($ch);

        $xml = simplexml_load_string($response);

        return $this->sanitizeTrafficData($this->parseTrafficData($xml));
    }