Six-wheel drive (6WD) articulated dump truck has excellent passing ability and high productivity, but its stability should be improved. A dynamic model of 6WD articulated vehicle with 3 degree-of-freedom (DOF) is established. With the control variables of yaw velocity and side-slip angle at mass center of front body, a feedfoward-feedback control system is designed by linear quadratic regulator...

Paper presents a study about dynamic effects obtained from the dynamic load testing of the city highway bridges in Latvia carried out from 2005 to 2012. 9 prestressed concrete bridges and 4 composite bridges were considered. 11 of 13 bridges were designed according to the Eurocodes but two according to the previous structural codes used in Latvia (SNIP 2.05.03-84). The dynamic properties of the...

INTRODUCTION Several uses of remote sensing devices (RSDs) have been proposed, such as on-road identification of high emitting vehicles and monitoring on-road vehicle emissions for program evaluation purposes. The Bureau of Automotive Repair (BAR) conducted a study to evaluate the ability of RSDs to consistently identify vehicles with excessive emissions and correctly classify the vehicles as f...

It is critical for the safety monitoring of highway bridges that beam bridge damage can be identified from dynamic response passing vehicles. Numerical simulations vehicles were conducted utilizing vehicle–bridge coupling vibration theory and indirect measurement method. Fast Fourier transform was performed on time history vehicle acceleration, driving frequency component its instantaneous ampl...

An exact threat level assessment method is necessary to improve safety of vehicles, but the traffic environment is not taken into account adequately in existing approaches. This paper presents a Bayesian network based method to improve the effect of vehicles threat evaluation. In the method, various factors threatening vehicle safety are analyzed, and a Bayesian network model with environmental...

It is known, that track deterioration (loss of its geometry) strongly depends on track support conditions, particularly on the ballast. In this paper a novel approach is presented to predict the evolution of track vertical irregularities due to vehicle-track dynamic interaction taking into account ballast stiffness with dry friction. An applied vehicle-track model is composed of a railway car a...

The multi-vehicle covering tour problem (m-CTP) involves finding a minimumlength set of vehicle routes passing through a subset of vertices, subject to constraints on the length of each route and the number of vertices that it contains, such that each vertex not included in any route lies within a given distance of a route. This paper tackles a particular case of m-CTP where only the restrictio...

There are huge amount of vehicles passing through Toll Gate Stations every day. The automatic toll booth would pay the toll automatically. In this system camera is used for capturing the image of the vehicles number plate. The captured image would be converted into the text using ANPR [1] and the toll would be cut from the user’s account and then the gate is opened. The system is divided into t...

In this paper, a tiny low-power wireless sensor network (WSN) node based on msp430 microcontroller is introduced. The node should be serving the needs of a special WSN used for traffic monitoring, or more precisely for the indication of vehicle’s presence. The single vehicle detection is based on the utilization of magnetometer sensor, where the change of Earth’s magnetic field, caused by the m...

All existing traffic radars to be used for speed enforcement measure the speed of the passing vehicles on the basis of a CW technology. A new prototype of a traffic radar sensor has been developed that not only measures the speed of the vehicle but also its distance to the radar device, photograph see figure 1. The measured distance enables the police to unambiguously assign the measured speed ...