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Height Limit Warning System (HLWS)
The Height Limit Warning System (HLWS) is capable of detecting low-lying structures up to 50 m away from the front of the vehicle and give warning to the driver to take necessary evasive actions to avoid collision.
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Case Studies (Accidents with Height Barrier)
YEO KAI WEN. “An aerial view of the collapsed shelter.” The Straits Times, 17 Jun. 2016, https://www.straitstimes.com/singapore/walkway-shelter-collapses-at-carpark-in-bukit-batok-at-least-1-car-crushed
FACEBOOK/ROADS.SG. “Part of Punggol East road was closed after a truck hit a height limit barrier, knocking its cargo onto the road.” The Straits Times, 6 Nov. 2017, https://www.straitstimes.com/singapore/part-of-punggol-east-road-closed-after-cargo-truck-crashes-into-height-limit-barrier
Benefits of Height Limit Warning System (HLWS)
- Early warning to alert driver of impending collision with height barrier
- Ability to detect accurately “true” barrier i.e. will not give false alert
- Device is sensitive to even detect thin railing
- Height limits can be detected with or without height limit signboard
- Minimise injuries of drivers and passengers from barrier collision
- Save repair costs from accidents
SCDF’s Latest 7th Generation Ambulance fitted with Height Limit Warning System (HLWS)
ALPHONSUS CHERN. “The SCDF’s seventh-generation ambulance is equipped with a built-in system to decontaminate the vehicle within 20 minutes. The ambulance also has a solar panel and an electronically controlled loading and unloading system for stretchers.” The Straits Times, 16 Apr. 2021, https://www.straitstimes.com/singapore/scdf-unveils-latest-ambulance-new-mobile-command-posts
Specifications
| Model | vSmart Height Limit Detector |
| Height Limit Detection Range | Up to 50 meters |
| Distance Detection Error | <5% |
| Detection Method | Height limit can be detected with or without height limit sign, with or without height limit gantry
Intelligent high limit detection system (e.g. a tall vehicle in front would not trigger a height limit warning) Individual vehicles can set different safe height limits |
| Operating Voltage | +9 to +36 VDC |
| Power Consumption | <5W |
| Operating Temperature | -20°C ~ 70°C |