Solverra leads the way with high performance Network Survey Vehicles to boost the traffic survey work across India. Using a blend of cutting-edge technologies like GPs, laser system, and hi-def video image processing, the NSV vehicles from Solverra are truly one-of-its kind. Be it longitudinal profiling or assessment of pavement condition index, the fully equipped NSV is what governments and public bodies can rely on to improve road conditions and elevate the traffic conditions.

The GPS Vision system consists of a high grade Differential Global Positioning System (DGPS), Rocket grade Inertial Measurement Unit (IMU), sub centimeter Distance Measuring Instrument (DMI), six 1600x1200 optical cameras mounted in stereo pairs viewing forward front, left and right, a house front camera, two optical to infrared downward pavement facing cameras. Two sets of line lasers mounted behind the rear wheels projecting to rear of vehicle and point lasers in the wheel path projecting down and several computers and mass storage devices and user interface system.

• A central data logger unit integrated with Inertial Navigation System a differentially corrected Global Positioning system (GPS) and a Distance Measuring Instrument (DMI) for highly accurate vehicle positioning
• Laser profilometers utilizes a class I laser profiler and accelerometers to collect roughness to output IRI at most posted speeds.
• Transvers profile of the pavement surface is generated based on the actual rut depth when compared to the pavement surface level outside the wheel path.
• Rutting profile of the pavement surface is generated using two line laser and two thermal cameras detecting overall rut profile and the maximum depth even with the vehicle deviating slightly from the wheel path.
• Cross Profile Straight Edge is used for quality control checks of the Transverse profile.
• 3D profiles of the road are provided by stereo pair cameras
• Pavement right of way image logs are captured which are geometrically correct to quickly locate and measure any roadway feature and extract that data for further plotting on maps or to populate databases.
• Road geometry measurement is done using built-in high resolution Inertial Navigation System to calculate the radius of curvature, cross-fall and etc.
• A GPS system with a ±1cm+2ppm Horizontal accuracy and ±2cm+2ppm Vertical accuracy of the vehicle location integrated with a GPS Base Station to provide differential correction to the rover unit.
• Inventory and rating for pavement condition and right of way asset data are done using manual visual input through the keyboard with availability of keys is programmable as per user needs.
• Calibration for roughness meter is done using on known pavement sections where the profile ground truth is measured with an ASTM Class 1 and World Bank Standard Class 1 profiler.
• The system has a built-in Distance Measuring Instrument (DMI) with less than 1 mm accuracy.
• The data acquisition software has a spatial data viewing feature to plan the survey and monitor the cameras and lasers during the survey.
• GPS Vision System has desktop based software for extracting distresses and road right of way features (in the form of spatial features - point, line and polygon) and their related attribute data from the stereo-pair images.
• GPS Vision has ICON, a web and/or cloud based asset management application