Declaration on accessibility

The ARL - Academy for Spatial Development in the Leibniz Association endeavours to make its website


accessible to all without barriers.


Legal basis

The legal basis is the Disability Equality Act (BGG), the Lower Saxony Disability Equality Act (NBGG) and the Lower Saxony Ordinance on Accessible Information Technology of Public Bodies (NBITVO).

Content Accessibility Guidelines (WCAG) 2.1 at Level A, published as a W3C Recommendation (Web Standard) (criteria of the European standard EN 301 549, version 2.1.2), as well as the further developed BITV 2.0 (Barrier-free Information Technology Ordinance).

Preparation of the declaration

This declaration was created on 24.10.2021.

The declaration was last reviewed on 07.02.2022.

The assessment is based on a self-assessment according to the BITV test.

The following pages were checked as examples during the self-assessment:


Status of compatibility

These web pages are compatible with the specifications of the harmonised European standard EN 301 549 V2.1.2 (08-2018) in many parts.

The following incompatibilities currently still exist:


  • no alternatives for CAPTCHAs
  • no main language specified
  • no words and sections in other languages marked
  • error prevention is not supported
  • no correct syntax
  • no status messages available programmatically
  • no user-defined settings possible


The following incompatibilities may exist for videos embedded via Youtube:


  • Playback of subtitles;
  • Synchronous subtitles
  • Preservation of subtitles
  • Playback of audio description
  • Synchronous audio description
  • Audio description preservation
  • Controls for subtitles and audio description


The following incompatibilities may exist with PDF documents:

  • Not PDF/UA compliant



If you notice any remaining barriers with regard to our website or if you need information on content that is not yet accessible, please send us a message. We will do our best to reply as soon as possible and provide you with barrier-free information that is not accessible.


ARL - Academy for Spatial Development in the Leibniz Association

Vahrenwalder Straße 247

30179 Hannover

Phone +49 511 34842-0

Fax +49 511 34842-41

Conciliation procedure

If you do not receive satisfactory answers from the above contact option, you can apply to the conciliation board, set up at the State Commissioner for People with Disabilities in Lower Saxony, to initiate conciliation proceedings under the Lower Saxony Disability Equality Act (NBGG). The conciliation board according to § 9 d NBGG has the task of settling disputes between persons with disabilities and public bodies of Lower Saxony on the topic of accessibility in IT. The conciliation procedure is free of charge. There is no need to involve a legal advisor.


You can contact the conciliation board directly at:

Telephone: 0511/120-4010