Taxonomie Query

$tax_query = array(
	'relation' => 'OR',
	array(
		'taxonomy'         => 'fahrplankategorien',
		'terms'            => 'regulaer',
		'field'            => 'slug',
	),
	array(
		'taxonomy'         => 'fahrplankategorien',
		'terms'            => 'sonderfahrplan',
		'field'            => 'slug',
		'operator'         => 'IN',
	),
);