HRF Series
RFID Vehicle Identification
RFID tag-based vehicle identification for unmanned weighbridge access control — HF or UHF read range options.
Manufacturing
Built, installed & supported by HMT
Compliance support
Calibration & Legal Metrology guidance
System ready
Automation, ticketing & ERP integration
01Overview
Each registered vehicle carries an RFID tag; the reader identifies the vehicle automatically on approach, matches it against the authorized vehicle list, and passes identification through to the weighbridge software without manual entry.
02How it works
HF for close-range certainty, UHF for drive-through speed
HF (high-frequency) RFID tags are read at short range — typically a few centimetres to a metre — which suits applications where a tag is deliberately presented close to a reader, giving high certainty about exactly which vehicle is being read. UHF (ultra-high-frequency) tags read at much longer range, commonly several metres, which is what makes drive-through identification possible: a vehicle can be identified as it approaches at normal speed, without stopping or the driver doing anything at all.
Automatic identification, not manual entry
Each registered vehicle carries a tag encoded with an identifier unique to that vehicle. As it comes within the reader's range, the reader captures that identifier and passes it to the weighbridge software, which matches it against the authorized vehicle list — replacing what would otherwise be an operator manually typing a vehicle number or looking one up.
Feeding straight into the ticketing sequence
Once a vehicle is identified, that identification flows directly into the weighment record — the ticket that's eventually printed or logged is tied to the correct vehicle automatically, rather than depending on someone entering the right registration number at the right moment.
03Manufacturing & build quality
Reader units are built around an antenna and RF front-end tuned to either the HF or UHF frequency band, with read range and sensitivity calibrated during manufacturing to the intended application — a short, deliberate-presentation HF reader is tuned differently than a UHF reader meant to catch a tag from several metres away at vehicle speed. Tags are encoded with a unique identifier and tested for read reliability before being paired with vehicles. Both reader and tag components are housed for outdoor, weatherproof duty where mounted at a gate or lane entrance, and the reader's data output is tested against the weighbridge software's expected identification format before dispatch.
04Problems it solves
Manual entry errors and delays
Typing a vehicle registration number by hand is slow and occasionally wrong — automatic tag reading removes both the delay and the transcription error risk.
Fraud from misidentified vehicles
A manually entered vehicle ID can be entered incorrectly, deliberately or otherwise; a tag-based system ties identification to a physical credential that's harder to substitute.
Queue time at unmanned gates
UHF's longer read range enables drive-through identification without the vehicle stopping, which keeps queue times down at high-traffic unmanned sites.
Managing ID cards or paperwork for large fleets
For a captive fleet that visits regularly, an RFID tag replaces whatever manual driver-ID or paperwork process a site would otherwise rely on for each visit.
05Why it matters
Automated vehicle identification is the piece that makes unmanned or high-throughput weighbridge operation actually practical — without it, every vehicle needs a human to confirm who they are before a weighment can proceed, which puts a hard ceiling on how far a site can reduce staffing or speed up traffic flow. Choosing HF or UHF correctly for the site's actual traffic pattern (deliberate presentation versus drive-through) is what determines whether that automation genuinely speeds things up or just moves the bottleneck.
06Salient features
- HF (short range) or UHF (long range, drive-through) tag options
- Automatic vehicle identification, no manual entry
- Feeds directly into the weighbridge ticketing sequence
08Technical file
Need the full technical sheet?
Request drawings, model-specific details and project documentation from the HMT team. A downloadable product file will appear here once approved.
09Complete system
Plan beyond the deck.
A vehicle weighing point can combine the weighbridge with indicator, load cells, traffic management and H-Weigh software for an accountable end-to-end workflow.
08In the field
09Frequently asked
Should we choose HF or UHF for our site?
UHF suits sites that want drive-through identification without vehicles stopping; HF suits sites where a deliberate, close-range tag presentation (for example, at a manned booth) is preferred for certainty about which vehicle is being read. Traffic volume and lane layout usually settle the choice.
How durable are the tags, and how long do they last?
RFID tags are passive electronic devices with no battery, generally durable for years of normal vehicle-mounted use, though tags exposed to physical damage or extreme conditions may need periodic replacement.
What's the realistic read range in practice?
HF is typically centimetres to under a metre; UHF is commonly several metres, though actual range depends on antenna placement, vehicle speed, and site RF conditions — a site survey during commissioning is the reliable way to confirm range for your layout.
How does it link to our authorized vehicle database?
The reader passes the tag's identifier to the weighbridge software, which checks it against a stored list of authorized vehicles — building and maintaining that list is a one-time and then ongoing administrative task, not something the reader itself manages.
What happens if a vehicle changes or a tag is lost?
Tags can be deregistered and reissued as needed — the vehicle database is what actually controls authorization, so replacing a lost tag or reassigning one to a different vehicle is an administrative update, not a hardware change.
10Industries this serves
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