N-I/A-15 (AT Sistema) Copia

What is it

AT Sistema is Gipuzkoa’s pioneer response to EU Directive 199/62/CE for shared maintenance of the N-I and the A-15 between Gipuzkoa Provincial Council and the goods hauliers who use these two high capacity roads.
On passing beneath the gantries and signaling masts, and with no need to stop the vehicle or reduce its speed, the system detects, classifies and charges heavy goods vehicles weighing more than 3,5 tons, either by means of the VIA-T compatible TAG on board the vehicle or by reading its number plate.

Objectives of AT-Sistema:

That the heavy goods vehicles using the N-I and A-15 contribute to their maintenance.
To improve the everyday mobility of the people of Gipuzkoa who use the N-I and the A-15.

How it functions

  1. The system detects the vehicle and classifies it by means of a laser reader. 
  2. Another reader also scans the front number plate at the same time.
  3. If the vehicle has a TAG (Via-T) device, an antenna system will interact with it and automatically identify it. If not, it will be identified by means of the number plate reader.
  4. Based on said data, AT Sistema will proceed to charge the toll with no need to stop the vehicle or for any kind of physical transaction.
  5. Finally, once through the gantry, the system will scan the rear number plate. A double reading to guarantee data consistency.
How does AT Sistema function?

Who it's for

AT Sistema is applicable to haulage vehicles of more than 3.5 tons. 
If you have TAG, compatible with VIA-T, you don’t have to register. If you don’t have one, you’ll have to register.
Heavyweight vehicles
Neither light nor passenger carrying vehicles (*) are subject to the toll.
Light vehicles
(*) Given that buses and lorries have a similar volume, to prevent classification errors, it is advisable for buses to registre.
Passenger transport


There are 3 readers:

Bi errepide horietarako sarbide-irteera guztietan matrikula irakurketa-puntuak ezarri dira erabiltzaile bakoitzak egiten duen ibilbidea kalkulatzeko.


A-15, from Zikuñaga in Hernani (166.300KP) to the junction with the AP-8 and GI-41 in Astigarraga (169.320KP).

Andoain (*)

From the Andoain South junction on the N-I (455.500KP) to the Lasarte-Oria South junction (450.870KP).
From the Andoain South junction on the N-I (455.500KP) to Urnieta (162.100KP) on the A-15.


N-I road from Etzegarate (405.450KP) to Idiazabal (412.900KP).

(*) For travel from the Andoain gantry with entry/exit at Andoain North, N-I-447B/A-15-159, payment must be made with a TAG device. +info

Registering with AT Sistema

To use AT Sistema users must be registered. Those who are NOT website users must click on “Register” and fill in the requested details.
If you are a website user but have forgotten your password, click on “remind me my password” and it will be sent to your email address.

Toll and method of payment


Stretch Kilometres HGV 1 HGV 2
Astigarraga 3,19 km 0.70 € 0.89 €
Andoain 5,37 km 1.18 € 1.50 €
Andoain-Andoain(*) 2,20 km 0.48 € 0.62 €
Etzegarate 7,45 km 2.36 € 2.93 €
Weights heavier than 3.5t and lighter than 12t (MAM) Weight equal to or heavier than 12t (MAM)

(*) For application of this toll, the required method of payment is a TAG device. +info

Method of payment

If you have a VIA-T compatible TAG,you don’t have to register.
If you don’t have a VIA-T compatible tag, you must register your vehicle/number plate and method of payment.
To enable payment by sporadic users passing through the Irun Barrera or Irun Ventas toll stations,the same method of payment used to pay said toll can be used to pay for all stretches of the A-15 and N-I in Gipuzkoa, meaning that users will be able to continue on their way without stopping. +info
If you don’t have a VIA-T compatible TAG you can register at our Customer Services Centre:

GI-20. 14,800KP
20170 USURBIL (Gipuzkoa)
Tel.: 943 105 106
Monday to Friday


You can consult the AT Sistema FAQs here.