OBU stands for On-Board Unit — it is the electronic device fitted to a vehicle that enables automatic distance-based toll charging on the Hungarian HU-GO network.
Hardware:
- A small electronic device typically around the size of a large matchbox
- Attaches to the inside of the windscreen using a suction cup or adhesive mount
- Has an indicator light showing operational status
- Relatively discreet and unobtrusive
Function:
- Contains a GPS/GNSS receiver that tracks the vehicle's position continuously
- Communicates with the HU-GO central system via mobile network (GSM)
- Automatically detects when the vehicle is travelling on a tolled road
- Calculates the charge based on:
- Distance travelled on tolled roads
- Vehicle category (axles, emission class)
- Road category
- Charges are applied to your HU-GO account automatically
Technical features:
- Tamper detection — alerts if device is interfered with
- Low battery warning — indicates when power is low
- Status indicator lights — shows operational status at a glance
Power Supply:
- Connects to the vehicle's 12V/24V power supply
- Typically via the cigarette lighter socket or direct wiring
OBU Deposit:
- A refundable deposit is required when obtaining an OBU
- Deposit is returned when the OBU is handed back in good condition
- Deposit amount varies — check current rates with NÚSZ
Related articles:
Where can I register for the HU-GO and get an OBU/ Route ticket?