Mobile Safety Trailer With Adjustable Barrier Wall
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Solution Overview
Problem
Conventional barriers for protecting road construction workers from traffic are inadequate as they require significant time and effort to transport and deploy, and they fail to provide sufficient protection against lateral traffic incursions and do not offer comprehensive safety solutions.
Innovation Solution
A safety trailer with a fixed safety wall and semi-tractor hookups at both ends, featuring removable and interconnected platforms, ballast members for weight balance, and adjustable vertical positioning, along with optional overhead protection and integrated lighting, ventilation, and power systems, to create a self-contained, mobile safety enclosure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional barriers (cones, barrels, flashing lights) are used to protect road construction workers, then the protection level is limited, but the deployment time and effort required is significant
Solution Approach 1:
The patent combines multiple protective functions (physical barrier, lighting, warning signals, worker amenities) into a single integrated trailer structure. The trailer merges the functions of conventional barriers with additional safety and comfort features, eliminating the need to deploy separate cones, barrels, and lighting equipment individually.
Solution Approach 2:
The trailer serves multiple functions simultaneously: it acts as a physical barrier against traffic, provides lighting for night work, displays warning signals, offers shelter and amenities for workers, and can be positioned to protect against lateral incursions. This multi-functionality resolves the contradiction by providing comprehensive protection in a single deployable unit.
2Reliability
If conventional barriers are deployed to protect against traffic, then some protection is provided, but they fail to protect against lateral incursions by traffic from adjacent lanes
Solution Approach 1:
The trailer extends protection into the lateral dimension by positioning barrier walls on both sides of the work area. This creates a three-dimensional protective envelope that prevents traffic from adjacent lanes from drifting into the construction zone, rather than only protecting against head-on collisions from the same lane.
Solution Approach 2:
The trailer can be configured with different barrier heights and positions on each side to adapt to varying traffic conditions from different directions. The asymmetric configuration allows optimal protection against lateral incursions from adjacent lanes while maintaining visibility and access requirements.
3Ease of operation
If separate maintenance vehicles are used to support construction workers, then worker needs can be met, but the number of vehicles increases and coordination complexity increases
Solution Approach 1:
The trailer merges maintenance support functions (restrooms, power supply, lighting, ventilation, food preparation areas) directly into the barrier structure itself. This eliminates the need for separate maintenance vehicles to travel to and service workers at the construction site, as all amenities are integrated into the single trailer unit.
4Reliability
If conventional barriers are used, then basic traffic warning is provided, but they create glare and secondary incidents
Solution Approach 1:
The lighting system is designed with directional quality, providing illumination only where needed (the work area) while using shielding and positioning to prevent light from reaching oncoming traffic. This local quality approach ensures effective warning and work illumination without creating harmful glare that could cause secondary incidents.
Data Source
AI summary
In one embodiment, a safety trailer has semi-tractor hitches at both ends and a safety wall that is fixed to one side of the trailer. That side, however, can be changed to the right or left side of the road, depending on the end to which the truck attaches. A caboose can be attached at the end of the trailer opposite the tractor to provide additional lighting and impact protection. Optionally, the trailer can be equipped with overhead protection, lighting, ventilation, onboard hydraulics, compressors, generators and other equipment, as well as related fuel, water, storage and restroom facilities and other amenities.