Research on Road pavement Reflection Characteristics (III)

Single-Vehicle Run-Off-Road Crash Prediction Model Associated with Pavement Characteristics

This study aims to evaluate the impact of pavement physical characteristics on the frequency of single-vehicle run-off-road (ROR) crashes in two-lane separated rural highways. In order to achieve this goal and to introduce the most accurate crash prediction model (CPM), authors have tried to develop generalized linear models, including the Poisson regression (PR), negative binomial regression (...

Effects of pavement lightness and colour on road lighting performance

Is Flexible Pavement Design on the Right Road?

The principles underlying current mechanistic–empirical pavement design methods for fully flexible pavements have changed little in the past 30 years. They generally use linear elastic theory to determine the permissible strain at critical locations in the pavement structure to safeguard the road against excessive fatigue and structural deformation. These criteria are calibrated using performan...

Management aspects of road pavement rehabilitation

The optimization of a pavement management system necessitates the knowledge on the actual values of pavement condition parameters, actual pavement condition improvement as related to the use of various rehabilitation strategies, and scope of pavement deterioration before and after rehabilitation. The data for six pavement condition parameters (bearing capacity, unevenness, rut depth, macro text...

Flexible Pavement Research

It is the purpose of this paper to point out the problems associated with flexible pavements, to summarize the research that the Joint High­ way Research Project has done in this field, and to outline present endeavors. In so doing, it must be recognized, first of all that flexiblepavement research, or the general problem of flexible-pavement design, consists of two parts. One of these is the m...