Infrastructure Management Services offers a full range of pavement condition data collection and right of way asset data collection services. As a full service pavement management consulting firm, our expertise lies in pavement distress surveys, right of way asset data collection, pavement management software, and development of a comprehensive pavement management report and analysis.
We are experts across the three key elements of pavement assessment:
We are experts across the three key elements of pavement assessment:
- Data Collection: Innovative pavement performance and right of way asset data collection.
- Software: Expertise with most third-party applications.
- Analysis: Development of robust maintenance and rehabilitation solutions.
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Data Collection
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Overview of RST Components
Laser Camera Array
The laser camera array is capable of collecting automated pavement condition data in the form of roughness to International Roughness Index (IRI) standards, wheel path rutting, transverse cracking, block cracking, alligator cracking, and texture. The technology driving the laser-camera array removes the subjective nature of pavement condition data collection. The pavement condition data may be processed to provide extent-severity distress ratings, or reduced to a series of index scores for loading into an appropriate pavement management software.
Cross slope, radius of curvature, and grade are measured with a road geometric instrumentation system that is integrated within the RST system. These measurements are carried out independent of vehicle speed between 5-55 mph without the need of traffic control.
Digital Direct Collection/Rating system (DDCRS)
The Digital Direct Collection Rating System is a touch screen-based tablet computer that allows the user to define what information (pavement distresses, attributes, asset information) is to be collected and how it is to be quantified. The DDCRS is integrated into the data flow through time code, GPS, distance, and inventory control. In the context of this survey, the DDCRS will be configured to be used as a data collection and checking device. Pavement distress data will be collected continuously, while inventory and attribute data will be checked as the survey proceeds. As the operator identifies an attribute, the starting point is noted, and then closed at the end of the attribute (pavement type, lane count etc.). The attribute data is then logged against the corresponding roadway section complete with its GPS coordinate, distance and linear reference. The data can then be plotted against the source data for validation.
Pavement management survey events (such as detours, obstructions or railways crossings) and inventory related items would be collected and noted in the data. RST operators note the surveyed lane, direction, lane count (either per highway or per pass), and predominant naming convention on a section-by-section basis. Highway names will then be cross-checked against data extracted from the videos and GIS. During the pavement distress survey, changes to the inventory and base attributes will be noted and an exceptions report developed for the client.
Distance Measuring
The RST uses dual hub mounted, pulse transducer type distance measuring instruments for collection of linear distances to less than 0.5% (0.005 miles/mile) accuracy. The RST is capable of managing and accumulating distance by present means (say every 50 feet) or by the section. It also separates distance where the sensors are paused (for example during a construction detour), or when the survey speed falls below a minimum threshold.
GPS Coordinate Data Collection
This is a tightly coupled inertial navigation-based GPS system. The unit is largely unaffected by satellite shadow caused by temporary loss of satellite coverage, tree canopy or structures. The GPS system collects measurements such as pitch, roll, and yaw. A GPS trace is used to verify and validate network coverage and the agency’s GIS.
Forward, Side and/or Rear View Images
Dual forward, shoulder (or ditch), rearward, and downward pavement view images can be collected using high resolution digital video cameras and frame grabber software. Images may be captured at preset distance intervals, time intervals or at a fixed number of images per section. The cameras will be oriented to collect right of way panorama, sign views, ditch views, and roadway views.
All images are:
The laser camera array is capable of collecting automated pavement condition data in the form of roughness to International Roughness Index (IRI) standards, wheel path rutting, transverse cracking, block cracking, alligator cracking, and texture. The technology driving the laser-camera array removes the subjective nature of pavement condition data collection. The pavement condition data may be processed to provide extent-severity distress ratings, or reduced to a series of index scores for loading into an appropriate pavement management software.
Cross slope, radius of curvature, and grade are measured with a road geometric instrumentation system that is integrated within the RST system. These measurements are carried out independent of vehicle speed between 5-55 mph without the need of traffic control.
Digital Direct Collection/Rating system (DDCRS)
The Digital Direct Collection Rating System is a touch screen-based tablet computer that allows the user to define what information (pavement distresses, attributes, asset information) is to be collected and how it is to be quantified. The DDCRS is integrated into the data flow through time code, GPS, distance, and inventory control. In the context of this survey, the DDCRS will be configured to be used as a data collection and checking device. Pavement distress data will be collected continuously, while inventory and attribute data will be checked as the survey proceeds. As the operator identifies an attribute, the starting point is noted, and then closed at the end of the attribute (pavement type, lane count etc.). The attribute data is then logged against the corresponding roadway section complete with its GPS coordinate, distance and linear reference. The data can then be plotted against the source data for validation.
Pavement management survey events (such as detours, obstructions or railways crossings) and inventory related items would be collected and noted in the data. RST operators note the surveyed lane, direction, lane count (either per highway or per pass), and predominant naming convention on a section-by-section basis. Highway names will then be cross-checked against data extracted from the videos and GIS. During the pavement distress survey, changes to the inventory and base attributes will be noted and an exceptions report developed for the client.
Distance Measuring
The RST uses dual hub mounted, pulse transducer type distance measuring instruments for collection of linear distances to less than 0.5% (0.005 miles/mile) accuracy. The RST is capable of managing and accumulating distance by present means (say every 50 feet) or by the section. It also separates distance where the sensors are paused (for example during a construction detour), or when the survey speed falls below a minimum threshold.
GPS Coordinate Data Collection
This is a tightly coupled inertial navigation-based GPS system. The unit is largely unaffected by satellite shadow caused by temporary loss of satellite coverage, tree canopy or structures. The GPS system collects measurements such as pitch, roll, and yaw. A GPS trace is used to verify and validate network coverage and the agency’s GIS.
Forward, Side and/or Rear View Images
Dual forward, shoulder (or ditch), rearward, and downward pavement view images can be collected using high resolution digital video cameras and frame grabber software. Images may be captured at preset distance intervals, time intervals or at a fixed number of images per section. The cameras will be oriented to collect right of way panorama, sign views, ditch views, and roadway views.
All images are:
- Date and time stamped, attributed with its route/section identifier and orientation.
- Integrated with the DMI reading to the nearest foot and GPS coordinate information.
- Presented in jpeg format, electronically stored on mass storage devices and/or DVD
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Data AnalysisIMS can perform the following in addition to customized pavement analysis work:
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Analysis - IMS will obtain agency input to review the current pavement maintenance plans and rehabilitation practices and determine the appropriate strategies, unit rates, and budgets for analysis. Once the unit rates and operating parameters of the system are established, we will start the following analysis and reporting as part of the software training, updating, and support:
- Street ownership and inventory/attribute report.
- Present pavement condition ranking: identify the current condition of each street in the network, as well as the network as a whole.
- Fix all budget analysis: this identifies the upper limit of spending by rehabilitating all streets assuming unlimited funding.
- Do nothing analysis: this identifies the effects of completing no roadway rehabilitation.
- Steady state pavement rehabilitation life cycle analysis: this identifies the minimum amount of rehabilitation that must be completed in order to maintain the existing level of service.
- Integration of capital projects and Master Plans: ongoing and proposed projects that affect roadway rehabilitation planning will be incorporated into the analysis.
- Draft 5 year pavement rehabilitation and prioritized paving plans:based on need, available budget, and level of service constraints-- a minimum of three budget runs will be completed.
- Final prioritized paving plan: incorporating feedback from stakeholder departments and utilities, complete with budget and level of service constraints.
- Recommendations for maintaining the database and future pavement data collection cycles.
Pavement Assessment Software
Third Party Software
IMS has collected data for more than 15 different software platforms including Lucity, Deighton's dTIMS, Hansen's Street Module, Cartegraph (CarteGraph’s PAVEMENTview, CarteGraphs’s SIGNALview and CarteGraphs’s SIGNview), MTC's (Metropolitan Transportation Commission) StreetSaver, and PAVER (i.e. MicroPAVER).
PavePRO Manager
PavePRO Manager, IMS' legacy proprietary solution, is a robust and comprehensive pavement management analysis tool for managing urban and rural roadway networks. It provides a means of cost effectively managing the pavement. PavePRO is unique to the industry as it was designed specifically for those who manage the streets. This strongly engineered application will assist all the needs of an agency that is trying to manage its pavement, clean up an inventory, integrate to GIS, and run comprehensive reports or budget scenarios. PavePRO is designed with the user in mind.
IMS has collected data for more than 15 different software platforms including Lucity, Deighton's dTIMS, Hansen's Street Module, Cartegraph (CarteGraph’s PAVEMENTview, CarteGraphs’s SIGNALview and CarteGraphs’s SIGNview), MTC's (Metropolitan Transportation Commission) StreetSaver, and PAVER (i.e. MicroPAVER).
PavePRO Manager
PavePRO Manager, IMS' legacy proprietary solution, is a robust and comprehensive pavement management analysis tool for managing urban and rural roadway networks. It provides a means of cost effectively managing the pavement. PavePRO is unique to the industry as it was designed specifically for those who manage the streets. This strongly engineered application will assist all the needs of an agency that is trying to manage its pavement, clean up an inventory, integrate to GIS, and run comprehensive reports or budget scenarios. PavePRO is designed with the user in mind.
- User-friendly and easy to navigate, interfaces with ESRI and other GIS programs, capable of viewing on screen images of the roadway and pavement.
- Develops comprehensive roadway inventories complete with a full suite of pavement distresses and other attribute information.
- Not only looks at pavement distresses, but also includes inputs to assess roughness, rutting, shoulder conditions, drainage, and environmental conditions.
- Determining long-term maintenance and rehabilitation strategies based upon a cost benefit optimization analysis and not a worst first or simple scheduled scenario. PavePRO run multiple scenarios to determine which strategies will give the agency the greatest return on investment.
- Generates custom reports and the user can define or modify the network while still maintaining data integrity.
- Data may be easily extracted in multiple fashions.
- A unique option is to generate Pavement Condition Index (PCI) scores with or without deflection.
- Assurance of acquiring a pavement management software program from pavement experts.