Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 Page 9 Page 10 Page 11 Page 12 Page 13 Page 14 Page 15 Page 16 Page 17 Page 18 Page 19 Page 20 Page 21 Page 22 Page 23 Page 24 Page 25 Page 26 Page 27 Page 28 Page 29 Page 30 Page 31 Page 32 Page 33 Page 34 Page 35 Page 36 Page 37 Page 38 Page 39 Page 40 Page 41 Page 42 Page 43 Page 44 Page 45 Page 46 Page 47 Page 48 Page 49 Page 50 Page 51 Page 524 Road evaluation goes high-tech Technology may not have kept pace with predic- tions of flying cars by the 21st Century, but it is being used to make infrastructure more sound and trips around town more comfortable for drivers. The City of Greer contracted in 2016 with Trans- map of Columbus, Ohio, to help survey the existing condition of the city’s roads, replacing the manual “eye- test” method that had been used to grade roads in most need of repair. City roads are still graded using the Overall Con- dition Index (OCI) between 1-100, but they have now been evaluated by Transmap’s state-of-the-art mobile mapping system. “It’s efficient and less subjective. The old-fashioned way works fine, it’s just labor intensive,” City Engineer Steve Grant said. “We have 130 miles of streets so it would take someone months to just ride those streets eight hours a day. If you have three inspectors, each one will likely rate the street differently. It’s also less expensive for the city because we only have to run this every four or five years.” Transmap’s ON-SIGHT™ vehicle equipped with the newest Pavemetrics Laser Crack Measurement Sys- tem spent a full week last spring traveling City of Greer streets. The van uses laser line projectors, high-speed cameras and advanced optics to scan for pavement distress and acquire high-resolution 3D profiles of the road. Each wheel track collects independent data which is averaged to best determine the quality of the overall ride. Data provided to Grant displays an OCI score for every road along with crack width, crack frequency, potholes, utility cuts, surface integrity. Trained pave- ment technicians rated both the type of distress and the severity of each distress following guidelines estab- lished by the standards organization ASTM Interna- tional. “The vehicle took photos every 50 feet in all four directions so I can look at a road surface anywhere in the city without driving out there,” Grant said. “The software will allow us to run predictions on how the pavement will last into the future.”