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Digital Highway Data Vehicle (DHDV) contains the heart and soul of WayLink's technologies. The vehicle, built on a heavy-duty truck chassis, such as Ford E-350, integrates various sub-systems in an all-encompassing framework as follows:
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APSI-4096 conducts a full-lane width distress survey of pavements at speeds of up to 60 mph (100 Km/h) at 1-mm resolution, and process the data at real time. It uses the laser imaging system to rid of shadows and provide uniform and consistent high contrast pavement images during or or night.
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ADA is a product of many years of research and development. ADA is capable of producing crack maps to identify types, geometries, and directions of cracks at 60 MPH (100 Km/h). ADA was designed to conduct full cracking surveys at real-time along with the APSI-4096 with images and analysis results saved into location referenced database tables.
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This sub-system captures imagery of roadway, pavements, signs, and other Right-of-Way features. Using multiple high-resolution, area-scan color cameras, PRIS is able to produce images of unprecedented quality. Camera options include baseline 1300-pixel color cameras, High-Definition (HD) 1080p color cameras, and Ultra HD color cameras.
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A user-focused application allowing for data review and editing in an office environment. This application is designed to display all the data sets collected during a DHDV collection procedure. More importantly, distress information can be easily edited and added into the pavement database tables through the use of the deluxe version of MHIS.
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Laser Rut Measurement System (LRMS) is a transverse profiling system, capable of acquiring full 4 m (13ft 5in) width profiles of highway lanes at speeds up to 100 Km/h (60 mph) at the resolution of more than 1200 points.
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WayLink Systems Corp. installs an array of positioning systems in DHDV to represent the vehicles speed, bearing, location, and other general positioning data sets. This array consists of a heavy duty Distance Measuring Instrument (DMI); a self-contained, differential GPS receiver and antenna. A solid-state, multi-axis, inertial sensing Gyroscope, or a high-end Inertial Measurement Unit (IMU) are the user selectable options.
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Dedicated, high-frequency, high-intensity lasers, for collecting longitudinal roughness data for use in calculations of International Roughness Index (IRI), Ride Number (RN), and Macrotexture (MT).