External Location System (ZSL)

A ZSL is a device permanently installed in the vehicle by a ZSL operator. The device sends geolocation data to e-TOLL through data transmission.

How to use a ZSL:

• check the list of ZSL operators and ZSLs approved for e-TOLL (the list can be found in the Materials to download section below),
• to purchase the device, contact the selected ZSL operator that will provide you with the device along with its unique business number,
• get registered in e-TOLL (see how to do it in the How to get registered in e-TOLL) tab, register the device, match the device with the vehicle and activate it – you can do it quickly and smoothly via the Internet Customer Account.

• check the validity of the purchased subscription (applies to devices under subscription, Note! Not every device is subject to a subscription check the details with your operator):
• contact your operator to extend the subscription before it expires;
• if you fail to renew the subscription, the geolocation data will not be sent to the e-TOLL system and tolls won’t be calculated; in this case you will be exposed to the consequences of failure to pay tolls for driving on toll roads
• if you fail to renew the subscription, the operator may unregister your device, which will cause it to be automatically removed from the e-TOLL system.
• contact your operator if:
• your ZSL device (including its SIM card) has suffered a technical failure or mechanical damage;

The Ministry of Finance and the National Fiscal Administration shall not be held liable for failures and technical problems of devices for transmitting geolocation data to the e-TOLL system.

• contact e-TOLL helpline if:
• you have questions about: using your settlement account, tolls, settlement account balance, device registration and activation on the Online Customer Account;
• your device lost connection to the e-TOLL.