# Expandable Collision Signage The Air Warning Increases in Height to Indicate Road Accidents Ahead By Amelia Roblin | Published 2014-01-13 | Autos Source: Trend Hunter, https://www.trendhunter.com/trends/air-warning References: [red-dot.sg](http://www.red-dot.sg/en/online-exhibition/concept/?code=997&y=2013&c=13&a=0) Given that it can be difficult to spot even three vehicles ahead of you on the highway, you can probably appreciate the consideration that went into the Air Warning's design. Thought up by Lim Dong Hyun and Kim Yoon Ho, this contraption would enlarge in the event of a [car accident](https://www.trendhunter.com/trends/highrisk-roadway) to notify [motorists in advance about the conditions](https://www.trendhunter.com/trends/urban-traffic-management) to come. The triangular base of the hazard sign can be easily activated with a foot's push, causing the upper portion to inflate, rise up and double in height. What's displayed is a [highly visible triangular prism](https://www.trendhunter.com/trends/school-bus-safety) in a bright red color and with the word "DANGER" printed across it. Floating up at several times above the roof of vehicles, the Air Warning can easily be seen with sufficient time to slow down. ## Trend Insights (Trend Hunter) - Score: 0.9/10 - Popularity: 14% | Activity: 6% | Freshness: 8% - Audience gender: 50% men, 50% women - Primary generations: Millennial, Gen X - Top markets: North America, South America, Europe, Asia, Africa ## Categories [Trend Hunter](https://www.trendhunter.com/trends) > [Autos](https://www.trendhunter.com/autos) ## Key Themes ### What's Driving This Trend - **Expandable Signage:** Opportunity for disruptive innovation in the signage industry to improve road safety. - **Inflatable Warning Devices:** Potential for innovation and adoption of inflatable devices in disaster warning and evacuation systems. - **Smart-tethering Technology:** Opportunity to incorporate smart-tethering technology in the design of expandable signage for real-time accident detection and notification. ### Who This Affects Most - **Road Safety:** Potential for disruptive innovation in the road safety industry to improve real-time accident detection and notification. - **Disaster Management:** Inflatable warning devices could revolutionize the disaster management industry, making evacuation processes more efficient and effective. - **Automotive:** Opportunity for automotive companies to incorporate expandable signage technology into their vehicles for improved safety features. ## Related on Trend Hunter - [Smart Airbag Platforms](https://www.trendhunter.com/trends/smart-airbag-platform.md) - [Airbag-Integrated Bicycle Helmets](https://www.trendhunter.com/trends/airbag-bicycle-helmet.md) - [Collision Alert Bike Systems](https://www.trendhunter.com/trends/roadio-system.md) - [Road Worker Safety Solutions](https://www.trendhunter.com/trends/active-worksite.md) - [Pedestrian-Detecting Crosswalks](https://www.trendhunter.com/trends/smart-pedestrian-crosswalk.md) - [Autonomous Rear Safety Technologies](https://www.trendhunter.com/trends/collision-prevention-system.md) - [Rotating Vehicle Cabins](https://www.trendhunter.com/trends/active-cockpit.md) - [Flatpack Traffic Cones](https://www.trendhunter.com/trends/apiece-traffic-cone.md) - [Inflatable Accordion-Style Helmets](https://www.trendhunter.com/trends/ventete-ah1.md)