Who we are:

This website is provided by the CLARS (Charging, Low Emission Zones, other Access Regulation Schemes). It is provided by Sadler Consultants Ltd. It builds on the successful Low Emission Zone in Europe Network (LEEZEN) which has provided this website previously (under the address, also run by Sadler Consultants Ltd. 

The CLARS website provides information urban access regulation schemes; including urban road user tolling, Low Emission Zones and other access restriction schemes. These are the regulations that many towns and cities use to improve their air quality, noise, traffic and quality of life issues. We are the truly 1 stop shop on urban access regulations called for by the industry. We also support cities and other public authorities with their access regulation schemes, see our CLARS Platform page.

We are funded through Additional Services, Licence Fees and Sponsorship. 

If you would like more information on urban access regulations, This email address is being protected from spambots. You need JavaScript enabled to view it. about our additional services.

If you find our website useful, even if you don’t need any of the services above, please consider sponsoring us. Without funding, we cannot continue giving you the information you need.

Additional services can include:

  • Our data, including in different formats or summarised, or certain types of schemes 
  • Details of the increasing numbers Zero Emission Zones
  • Electric Vehicle and other propulsion advantages / disadvantages in Urban Access Regulations and Urban areas.
  • Our website provides information on confirmed schemes. We also have information on future not yet n-confirmed schemes
  • Access to our data for other purposes
  • Additional features on the website, perhaps upon login.
  • or anything else on access regulations, as we are likely to have that too!

Please may I take the opportunity to remind you that the data on our website is covered by database copyright, and all rights are reserved. No part of the website may be reproduced, transmitted, or utilised in any form or by any means for purposes other than personal use without written permission from ourselves. For more information, see our Terms and Conditions.

If you are interested in any of the above please This email address is being protected from spambots. You need JavaScript enabled to view it.

Keep up to date: You can recieve periodic alerts with news and changes, please register for alerts to keep up to date.

If you want to contact someone about any of the access regulation schemes, then please contact the individual city. The city and further information websites are given on the individual city page.

This website was funded from 23rd December 2013 to 22nd December 2017 within a contract with the European Union. From 23rd December 2017 the website is run on a Commercial funding basis by Sadler Consultants Ltd.


Sadler Consultants Ltd, (SCL) VAT no: DE 263964762. Email: This email address is being protected from spambots. You need JavaScript enabled to view it.. Webaddress:


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