This Roller Guardrail Seems Brilliant, Except For One Major Problem

Running into this energy-dissipating guardrail is a lot less violent, but it's what happens next that worries us. If you have trouble reading this message, [view it in a browser](. [Popular Mechanics]( FOLLOW [Facebook]( [Twitter]( [Pinterest]( [You Tube]( [Google Plus]( [Popular Mechanics]( [This Roller Guardrail Seems Brilliant, Except For One Major Problem]( Running into this energy-dissipating guardrail is a lot less violent, but it's what happens next that worries us. [Share on Facebook]( [This Roller Guardrail Seems Brilliant, Except For One Major Problem] [Share on Twitter]( [This Roller Guardrail Seems Brilliant, Except For One Major Problem] [Share on Pinterest]( [READ MORE]( [Popular Mechanics]( [Water Has Stopped Flowing Over the Spillway at the Oroville Dam]( Evacuations for at least 188,000 people living below the dam were ordered Sunday. [Share on Facebook]( [Water Has Stopped Flowing Over the Spillway at the Oroville Dam] [Share on Twitter]( [Water Has Stopped Flowing Over the Spillway at the Oroville Dam] [Share on Pinterest]( [READ MORE]( [Popular Mechanics]( [Why Carbon Fiber Is the Miracle Material]( Carbon fiber improves everything. So why aren't we making all our cars out of it? [Share on Facebook]( [Why Carbon Fiber Is the Miracle Material] [Share on Twitter]( [Why Carbon Fiber Is the Miracle Material] [Share on Pinterest]( [READ MORE]( [Popular Mechanics]( [Don't Hit the Trail Without a Hi-Lift Jack]( The poor man's winch. [Share on Facebook]( [Don't Hit the Trail Without a Hi-Lift Jack] [Share on Twitter]( [Don't Hit the Trail Without a Hi-Lift Jack] [Share on Pinterest]( [READ MORE]( [Popular Mechanics]( [More Than 200 Whales Escape Tragic Mass Beaching In New Zealand]( More than 650 pilot whales had stranded themselves on a New Zealand beach. [Share on Facebook]( [More Than 200 Whales Escape Tragic Mass Beaching In New Zealand] [Share on Twitter]( [More Than 200 Whales Escape Tragic Mass Beaching In New Zealand] [Share on Pinterest]( [READ MORE]( [Popular Mechanics]( [Launching a Missile From a Submarine Is Harder Than You Think]( The amazing amount of engineering and science that goes into launching an underwater Trident missile into low-Earth orbit. [Share on Facebook]( [Launching a Missile From a Submarine Is Harder Than You Think] [Share on Twitter]( [Launching a Missile From a Submarine Is Harder Than You Think] [Share on Pinterest]( [READ MORE]( FOLLOW [Facebook]( [Twitter]( [Pinterest]( [You Tube]( [Google Plus]( [Unsubscribe]( • [Privacy Policy]( [popularmechanics.com]( ©2017 Hearst Communications Inc. All Rights Reserved. Hearst Email Privacy, 300 W 57th St., Fl. 19 (sta 1-1), New York, NY 10019