According to the forensic statistics, in Iran, 26 percent of those killed in traffic accidents are motorcyclists in recent years. Thus, it is necessary to investigate the causes of motorcycle accidents because of the high number of motorcyclist casualties. Motorcyclists' dangerous behaviors are among the causes of events that are discussed in this study. Traffic signs have the important role of...

This study tested the effects of lane width, lane position and edge shoulder width on driving behavior for a three-lane underground urban expressway. A driving simulator was used with 24 volunteer test subjects. Five lane widths (2.85, 3.00, 3.25, 3.50, and 3.75 m) and three shoulder widths (0.50, 0.75, and 1.00 m) were studied. Driving speed, lane deviation and subjective perception of driving...

In this paper, the consequences of filled volume on the transient lateral dynamic and stabilities boundaries displacement of an articulated vehicle carrying liquid is investigated. First, a sixteen-degrees-of-freedom nonlinear dynamic model of an articulated vehicle is developed then, using TruckSim software the model is validated. Next, the dynamic interaction of the fluid cargo with the vehic...

In this paper, the consequences of filled volume on the transient lateral dynamic and stabilities boundaries displacement of an articulated vehicle carrying liquid is investigated. First, a sixteen-degrees-of-freedom nonlinear dynamic model of an articulated vehicle is developed. Then, the model is validated by using TruckSim software. Next, the dynamic interaction of the fluid cargo with the v...

With advantages of less land use and better protection for urban landscapes, the underground expressway has become a new solution for urban traffic problems. Relevant safety studies are deficient despite of their significance in urban road networks. The differences between expressways on and under the ground made it inappropriate to apply the detailed design of the former directly or mechanical...

This study presents the use of a vision-based fuzzy-PID lane-keeping control system for simulation single-track bicycle model. The (LKS) processes images to identify lateral deviation vehicle from desired reference track and generates steering command correct deviation. LKS was compared other methods, such as Ziegler–Nichols proportional derivative (PD) model predictive (MPC), in terms response...

Autonomous vehicles hold promise for increased vehicle and traffic safety, there are several developments in the field where one example is an avoidance maneuver. There it dangerous to be opposing lane, but safe drive original lane again after obstacle. To capture this basic observation, a lane-deviation penalty (LDP) objective function devised. Based on function, formulation developed utilizin...

objectives: the goal of the present study was to compare the role of vision on static postural stability between athletes and nonathletes. methods: participants included two groups of 25 persons, men karatekas who were selected in isfahan (age 20.6±2.8 years, 66.24±10.34 kg of weight, height 1.76±0.07 m) and healthy young men in isfahan (age 21.6±2.33 years, 66.8±11.34 kg of weight, height 1.74...