HTL Series
Traffic Light
Vehicle traffic signal for weighbridge lane control — red/green sequencing tied to the weighment cycle.
Manufacturing
Built, installed & supported by HMT
Compliance support
Calibration & Legal Metrology guidance
System ready
Automation, ticketing & ERP integration
01Overview
Signals a waiting driver when to pull onto the deck and when to stop, reducing the chance of a vehicle entering while a weighment is still in progress or the barrier is closing.
02How it works
Signaling tied to the weighment cycle, not a fixed timer
Unlike a standard road traffic light running on a fixed timer, a weighbridge traffic light is tied directly into the weighbridge software's weighment sequence — it shows green when the deck is clear and ready for the next vehicle, and switches to red once a vehicle is on the deck or a weighment is in progress, staying red until that cycle completes.
A visual cue that backs up the barrier and the queue
Where a boom barrier physically stops a vehicle, the traffic light gives the driver a clear, unambiguous visual signal before they even reach the barrier — reducing the chance of a driver approaching too early and having to stop abruptly, or misjudging whether the deck is actually free.
Standard red/green LED signal head
The signal itself is a conventional red/green LED head in a weatherproof housing — deliberately using a universally understood signaling convention rather than a custom display, so any driver instinctively knows what red and green mean without needing site-specific instruction.
03Manufacturing & build quality
The signal head is built from high-visibility red and green LED clusters in a weatherproof housing rated for continuous outdoor exposure and pole or wall mounting near the weighbridge approach. Wiring and control circuitry connect the signal to the weighbridge software's weighment-sequence output — the same kind of relay or serial trigger used for the boom barrier — and each unit is tested for correct signal switching and LED brightness/visibility before dispatch.
04Problems it solves
Vehicles entering the deck prematurely
Without a clear visual cue, a driver may pull onto the deck before the previous weighment has fully cleared, risking an invalid or interrupted reading — the light gives an unambiguous stop signal during that window.
Confusion at unmanned or lightly staffed sites
Where there's no attendant directing traffic, a driver needs some way to know when it's their turn — the light removes the guesswork that would otherwise fall to drivers reading each other's cues or waiting for a barrier alone.
Accidents and near-misses from unclear signaling
Vehicles approaching a busy weighbridge lane without clear stop/go signaling risk collision with a vehicle still on the deck or a barrier in the process of closing.
Queue management on high-traffic sites
Coordinated with the weighment sequence, the light helps keep vehicles queued in an orderly single line rather than bunching up at the deck entrance.
05Why it matters
Weighbridge yards mix heavy vehicles, pedestrians, and often forklifts or other yard traffic in a relatively tight space — exactly the kind of environment where a clear, unambiguous, universally-understood signal reduces real safety risk. A traffic light is a small piece of equipment relative to the rest of a weighbridge installation, but it's doing a genuinely important job: keeping vehicle movement around the scale predictable and orderly, particularly once a site removes the human attendant who would otherwise be directing that traffic by eye.
06Salient features
- Red/green LED signal head, weatherproof housing
- Ties into the weighbridge software's weighment 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
Where should the light be mounted for best visibility?
Typically on a pole or wall at a height and position visible to an approaching driver well before the barrier or deck entrance, giving enough distance for the driver to react and stop comfortably.
How does it get wired into our weighment sequence?
The same way the boom barrier does — via a relay or serial signal output from the weighbridge software, so both the light and the barrier respond to the same weighment-status trigger.
Is it visible in bright daylight?
Yes, it uses high-visibility LED clusters specifically chosen for outdoor daylight visibility, the same LED technology used in standard road traffic signals.
Does it need a backup power supply?
A backup supply is worth considering alongside the barrier's, since a light that stays dark or stuck on green during a power outage removes the safety benefit it's there to provide — pair its power planning with the rest of the site's critical electronics.
Do we need one light or two for a two-way lane?
That depends on your lane configuration — a single-direction lane typically needs one signal head facing approaching traffic, while a two-way or double-lane setup may need a head per direction.
10Industries this serves
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