TU BRAUNSCHWEIG

silent&ready4use

Development of a guideline for the integrated planning and control of fleet, energy and charging infrastructure to achieve an ecological and economical operation of vehicle fleets under extreme conditions at the police in Lower Saxony.

Funding: Federal Ministry for the Environment, Nature Conservation, Building and Nuclear Safety

Duration: 2016 to 2019

Central Contacts:  Jan Mummel/Kerstin Schmidt/Oliver Suckow

Contact IWF: Antal Zoltán Dér

Project partners:

  • Institute of Automotive Management and Industrial Production (AIP)
  • Institute of High Voltage Technology and Electrical Power Systems (elenia)
  • Institute of Automotive Engineering (IfF)
  • Institute of Machine Tools and Production Technology (IWF)
  • Police Lower Saxony

Motivation (problem description)

Police fleets are characterized by a large number of different vehicle types, a high number of vehicles and a high visibility of their vehicles. A sustainable and environmentally friendly operation of these fleets by using new drivetrain technologies is due to their exemplary function in society of particular relevance. The police in Lower Saxony takes against this background a pioneering role in integrating battery-electric (BEV) and plug-in hybrid vehicles (PHEV) into their fleets. The use of BEV´s and PHEV´s, compared to conventionally powered vehicles, is accompanied by long charging times, limited range and availability of the vehicles. Moreover, an energy and charging infrastructure is required for the operation of the alternatively powered vehicles. With using the planned, mixed fleet consisting of BEV´s, PHEV´s and conventionally powered vehicles in everyday patrol service, the police is facing the challenge of ensuring the availability of their vehicles in a continuous 24/7 use. This results in a multitude of dependencies between the fleet, energy and charging infrastructure, and the complexity in planning and controlling the fleet is multiplied.

Approach and project objective

In the project silent&ready4use, 50 BEV´s and PHEV´s will be integrated into the fleet of the police of Lower Saxony. The vehicles intended fields of operation reach from everyday patrol service over crime investigation to administration. The operation of the vehicles is accompanied by scientific research that focuses on the collection of the mobility requirements and charging demands in all fields of operation. Based on this, an integrated system for fleet planning and control as well as charging management will be developed, which meets the special requirements of police fleets. The challenge of the new planning and management system is to meet the extreme requirements of the police, such as unpredictable time and range of deployment, as well as the need for nearly 24/7 availability, especially in the field of everyday patrol service.

The results of the project will be summarized in a guideline that serves the integrated planning as well as the ecological and economical operation of vehicle fleets under extreme conditions. The guideline can assist decision-makers concerning planning, procurement and operation of electric vehicle fleets, especially under extreme conditions (e.g. additional police fleets, but also fire fighters or rescue services).


  last changed 02.08.2017
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