Issue 28 (only available in German)

	Articles Issue 28
	Deployment in Hamburg: using the Customer Management Instrument to manage requests and complaints from the public
	HCopt: optimization methods in operational service planning
	Project Notes
	Putting planfahrt on the map
	Successfully introducing and operating automatic passenger counting
	The Mexico City Metro: en route reliability on the new line 12
	V-SICMA: Although technology is indispensable, it can only provide support