During holiday weekends, the Highway Patrol sets up random sobriety checkpoints on secondary roads to deter drunk driving. These checkpoints operate from 10 PM to 3 AM, often in areas without street lighting. Officers need to stop vehicles, conduct brief interviews, and perform field sobriety tests – all of which require bright, uniform illumination to ensure both officer safety and evidentiary clarity.
The patrol previously used generator‑powered quartz floodlights, but the noise and exhaust fumes were intrusive, and the setup took 20–30 minutes per site. Moreover, generators frequently broke down or ran out of fuel, forcing early checkpoint closures.
| Challenge | Impact |
|---|---|
| Silent operation required | Generator noise made it hard to hear approaching vehicles and distracted officers |
| Zero emissions | Exhaust fumes near officers and stopped cars posed health risks |
| Glare‑free lighting | Headlights from oncoming traffic already cause glare; additional harsh lighting would impair officer vision |
| Fast relocation | Checkpoints change locations every night; setup must be under 5 minutes |
| Weather‑proof | Sudden rain and strong winds common in the region |
The patrol equipped each checkpoint vehicle with a Columus™ XN200 Inflatable Light Tower running on a 24V‑200Ah lithium‑ion battery pack. The XN200 provides 20,000 lumens of neutral‑white (4200K) light, covering an area of 380 m² (4,090 ft²) at >10 lux – enough to illuminate the entire stopping lane, inspection zone, and portable testing table.
Key configuration:
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Power: DC 24V battery (no generator)
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Runtime: 8 hours (full shift)
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Setup time: < 2 minutes per officer
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Colour temperature: 4200K – reduces eye strain and provides true colour rendition for recognising driver faces and detecting alcohol odor
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Wind resistance: 60 km/h with ropes; IP44 for rain
At 9:45 PM, a single officer carried the folded Columus bag from the patrol SUV to the chosen median, connected the battery cable, and pressed the start button. The built‑in fan inflated the 4‑metre column in 90 seconds, raising the diffused canopy. The 360° glare‑free illumination instantly lit up the entire checkpoint area – without any engine noise or exhaust fumes.
Officers placed the portable breathalyser table directly under the balloon, where ground illuminance measured 370 lux – equivalent to a well‑lit office – making it easy to read licence plates, observe driver behaviour, and perform sobriety tests accurately.
| Metric | Outcome |
|---|---|
| Deployment time | 1.5 minutes (vs. 25 minutes previously) |
| Battery runtime | Lasted full 5‑hour shift with 30% charge remaining |
| Noise level | Zero – officers could hear traffic and communicate without shouting |
| Driver compliance | No complaints about blinding lights; all drivers cooperated fully |
| Arrests made | 7 DUI arrests – all supported by clear video evidence captured under uniform lighting |
| Weather performance | Withstood 40 km/h gusts and light rain without tilt or failure |
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Officer Safety Enhanced – Glare‑free lighting eliminated blind spots, allowing officers to see approaching vehicles and pedestrian movements clearly. The silent operation also meant they could hear tyre noise and engine sounds to alert them of erratic driving well before the stop.
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Evidentiary Quality – The neutral‑white 4200K colour temperature provided true colour rendition, making video recordings from body‑worn cameras admissible and clear – crucial for court proceedings.
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Operational Flexibility – Checkpoints could be moved to different locations within minutes, enabling surprise deployments and increasing enforcement effectiveness.
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Cost Savings – Eliminated fuel costs and generator maintenance; battery recharging cost less than $1 per shift.