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FEHRLopedia

The FEHRLopedia has been designed as a portal to road infrastructure knowledge. The system links relevant content from numerous reputable sites on the internet. Users can search for information using different selection criteria; including project type, target end user, and technical scope. Users can also add new content and rate existing content according to the usefulness of the links.

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content	rating	viewed	date
Guidelines for the management of road surface skid resistance	5	4315	19.08.2009
Overview of the skid resistance, its connection to road safety and the road management. ...[more]
skid resistance and road crashes	5	4480	19.08.2009
Report that relates skid resistance indexes with road crashes statistics. ...[more]
Tire skid resistance on contaminated wet pavements	5	3974	19.08.2009
The article describes measurments and results that were performed on the skid resistance of wet pavements. ...[more]
Specification for skid resistance investigation and treatment selection	5	4077	18.04.2011
A useful Glossary of terms related to skid resistance. ...[more]
Measuring skid resistance without contact	5	4257	18.04.2011
The report by TRL gives a way to predict the skid resistance of a pavement basing on the microtextures. Photos and elaborated images are used. ...[more]
The relationship between road safety and infrastructure: using Accident Prediction Models	0	3706	31.08.2009
Accident prediction models (APMs) are mathematical models which express the safety performance in terms of traffic and road characteristics and estimate the road safety performance of a specific road type or intersection type. They allow road authorities the opportunity to monitor the safety performance of their roads and enhance the safety performance of their roads when necessary. This paper outlines a methodology for developing accident prediction models disaggregated to road characteristics. ...[more]
Proposal of improving existing practice of pavement recycling in Serbia	0	3722	31.08.2009
After a period of considerable fall of transit traffic and lack of road maintenance due to the political isolation of the country, during the past decade traffic was returning to road facilities in Serbia especially to the “main” road network. This decade was marked with extensive investments in road rehabilitation. One of the most important methods was Cold-in-place Recycling method, which was applied to some of 35 km of roads. Another important method was Hot-in-place Recycling, wh ...[more]
Water flow paths through roads - a field study	5	4089	01.04.2010
Understanding water flow in roads is important from a road engineering perspective as well as an environmental point of view. The moisture content of the unbound materials greatly influences the resilience of the road structure, and water acts as the prime transporter of pollutants from the road surface to the environment. This field study was conducted in order to determine where water infiltrated into the road, and to observe the long and short term dynamics of water distribution within the ro ...[more]
Geometic & absolute calibration of the english highways agency traffic speed deflectometer	0	3141	31.08.2009
The Traffic Speed Deflectometer (TSD) is being developed at the Transport Research Laboratory on behalf of the English Highways Agency as a tool to enable network structural surveys to be carried out at traffic speeds of up to 80km/h, avoiding traffic disruption and expensive traffic management. The sensing equipment consists of four velocity measuring lasers mounted on a stiff beam, which is housed in the trailer of an articulated lorry. Three of these lasers (P100, P300 and P750) are used to c ...[more]
Calculating a bridge assessment dynamic ratio using a bridge weigh-in-motion system	0	3651	31.08.2009
Bridges are designed and assessed for characteristic load effects, that is, those load effects corresponding to a certain return period. Maximum static load effects are measured or simulated and these are multiplied be some factor to allow for dynamics. The recommended allowance for dynamics is necessarily conservative to allow for the broadly varying circumstances covered by the bridge codes. Quantifying the dynamic increment of load effect, Dynamic Amplification Factor (DAF) is typically used. ...[more]

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