Rock Products

FEB 2019

Rock Products is the aggregates industry's leading source for market analysis and technology solutions, delivering critical content focusing on aggregates-processing equipment; operational efficiencies; management best practices; comprehensive market

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10 • ROCK products • February 2019 IN THE KNOW FAST FACT Lvl5 captured and analyzed five million miles of driving on U.S. roads and found that Michigan has the worst roads in the country. Study: Michigan Has Worst Roads; Florida Best Lvl5, a company that creates HD maps for self-driving cars, released a list of states with the best and worst road quality. The company captured and analyzed five million miles of driving on U.S. roads and found that Michigan has the worst roads in the country while Florida has the best. State and federal governments spend more than $400 billion on maintain- ing and building new roads each year. As U.S. infrastructure deterio- rates by the day, taxpayers are left wondering if initiatives such as the White House's proposed $1.5 trillion infrastructure spending will be used efficiently to bring relief. One of the major obstacles cities face in maintaining their roads is that their data is out of date. Cities contract out to firms to map their roads using LiDAR, which is both expensive and slow. Many cities, including Los Angeles, only receive this data once per year, meaning the city depends on months-old data to fix roads today. Lvl5 aims to help cities more effi- ciently maintain their roads by giving them up-to-date data that enables them to quickly identify road problems (e.g. crack in a road) before they become larger and more expensive issues (e.g. a pothole). Lvl5 captures hundreds of thousands of miles of video data every month through its iPhone dashcam app, Payver. The app pays users up to $0.05 per mile to record their driving using their cell phone. The company is already working with many Uber and Lyft drivers across the U.S. who run the dashcam app throughout the day. As cars are driving around, they are "vac- uuming" up data about the roads. The company then uses its computer vision algorithm to translate that crowdsourced footage into maps which rate road quality and show cities where problems exist. The country-wide dataset spans more than five million miles of Payver driving data from the last year. The methodology for ranking these videos included ran- domly selecting video frames from the videos (in total, 15 million frames sam- pled), and excluding all but the surface of the road from predictions by a neural network. Their neural network measures quality in four distinct areas: road paint fading, pavement cracking, potholes, and surface flatness. The data was normalized by frame density, and filtered to remove areas with not enough data. CONDOR— WASHING EQUIPMENT YOU KNOW & TRUST AT A PRICE YOU'LL LOVE VISIT US AT BOOTH 36063 Classic Eagle Iron Works outboard bearings, mounting points, rising current classifi er and adjustable weirs Class 1 Dodge reducer Lighter gauge US Steel construction

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