ROAD RESEARCH AND TRAFFIC STUDIES
There is a separate Road Research set up under GERI headed by a Joint
Director (R). The activities are manifold.
Facilities for following field investigations are available
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field density of layer of bituminous pavement by Nuclear Density gauge
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moisture content of soil by Nucleonic gauge
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binder content by Asphalt content gauge
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field density and field moisture content by conventional methods
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evaluating overlay thickness by banklebeam method
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unevenness measurement by bump integrator
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measurement of cracks, ruts, depressions, pot holes etc by visual rating
Laboratory Testing
Following testing facilities are available
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soil
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aggregate
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bitumen
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antistripping material
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bitumen mastic
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binder content by centrifuge method
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asphalt mix design
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flexible pavement design
Important Investigation Undertaken
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soil stabilization by lime, cement and flyash
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modifying bitumen by adding polymer, rubber, mica, lime as additives
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addition of antistripping agent to avoid stripping action of binder
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use of geotextile in road pavement
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pavement performance study
Junction Design
Done for NH, important SH and city roads to have smooth, safe and
efficient traffic flow
Traffic Survey
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axle load
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traffic count origin-destination study
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speed monitoring
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noise, breath analyse
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traffic and transportation management study
Sophisticated Instruments
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Retro-Reflectometer for measuring the reflection property of road sign
boards
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Weigh in motion system for weighing, classifying and monitoring speed of
vehicle without stopping it
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Road inventory car mounted with bump integrator.