Continuous structural assessment at traffic speed
Truck Mounted Deflectometer (TMD) for Network-Level Pavement Testing ↓
Used for network-level pavement testing, the TMD measures pavement performance at traffic speed without road closures.
The Truck Mounted Deflectometer (TMD) is a high-speed structural pavement testing system designed for network-level screening. It continuously measures pavement deflections at normal traffic speeds, eliminating the need for lane closures or stationary testing.
By capturing structural capacity data across entire road networks, the TMD enables road authorities and asset managers to identify structural deficiencies early and prioritize maintenance budgets where they have the most impact.
You need it when:
Efficient network screening: Assessing entire highways, state roads, and regional networks at traffic speed without lane closures.
High-traffic safety: Conducting structural tests in live traffic conditions where stationary testing is impractical or unsafe (minimizing exposure of crews to traffic).
Data-driven pavement management: Integrating high-density deflection data into Pavement Management Systems (PMS) for proactive, predictive maintenance planning.
Truck Mounted Deflectometer
To maximize product lifespan, Dynatest enhanced the vehicle design to enable relatively simple conversion to a new vehicle at the completion of the original vehicle life cycle, or to a trailer-mounting if preferred. The Dynatest Truck Mounted Deflectometer (TMD) is particularly suitable for test environments requiring overall shorter length testing platforms (without losing deflection bowl coverage) or in which stand-alone vehicle purchases or vehicle-trailer operations are problematic.
As with the other members of the Dynatest Deflectometer product lines (FWD & HWD), the TMD provides fully automated, fast, and precise measurements suitable for use with standard analysis and design procedures including especially rigorous mechanistic-empirical analysis of pavement structures such as the proprietary Dynatest ELMOD (Evaluation of Layer Moduli and Overlay Design) program.
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Key benefits
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Dynamic loading enables mechanistic-empirical analysis of the pavement layers to determine optimal reconstruction strategies
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Automated and rapid structural pavement testing
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Determines the layer of failure, rather than determining simply the bearing capacity
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QA/QC of newly built pavements
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Compares a range of repair options, including plane off and recycling rather than just applying overlays
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The use of the TMD provides accurate, reproducible, and repeatable structural data
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Automated and real-time monitoring of the load cell, geophones, and data variations ensures high quality of collected data
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Uses mechanistic-empirical analysis applicable to most of the pavement structures
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