This study examined the ability of computerized maze test performance to predict the road test performance of cognitively impaired and normal older drivers. The authors examined 133 older drivers, including 65 with probable Alzheimer disease, 23 with possible Alzheimer disease, and 45 control subjects without cognitive impairment. Subjects completed 5 computerized maze tasks employing a touch s...

In this paper, we present a dynamic navigation approach (DNA) that can be combined with GPS receivers, digital maps, and wireless technologies such as DSRC, 802.11p, and WiMAX. By calculating the score, a weighted sum of average vehicle speed, average inter-vehicle distance, road type, and road gain, for each candidate road, the DNA can generate a road score table and choose the road with the h...

The tire-road friction coefficient is critical to the performance of mobile robots working outdoors. However, it is difficult to measure using commercially available technology sensors. This paper presents a method of estimating the tire-road friction coefficient using a disturbance observer (DO) with compensator; the chassis speed is not needed. In this paper, the torque produced by the tire-r...

Transport Transport Transport Transport Transport Transport Transport Transport Transport Transport Transport Transport Transport Transport Transport Transport Transport Transport Transport Transport Transport Transport Transport Transport Transport Transport Transport Transport Transport Transport Transport Transport Transport Transport Transport Transport Performance-based Standards for the R...

Several factors may contribute to occurrence of road accidents which are human factors, vehicle factor, road factor and environmental factor. There has been recent evidence of a relationship between road accidents and emotional distress as well as fatigue. Monotonous and complex road environments are the road factor that relates to the internal factor within driver. The overall aim of this stud...

The road icing is an adverse weather condition lead to dangerous driving conditions with consequential effects on road transportation. A numerical road icing predication approach is employed for automatic prediction of road icing conditions in three cities of Hubei Province, viz., Wuhan, Shiyan and Xianning. The approach is derived from the support vector machine (SVM). To improve the classific...

OBJECTIVE To evaluate whether driving simulator and road test evaluations can predict long-term driving performance, we conducted a prospective study on 11 patients with moderate to severe traumatic brain injury. Sixteen healthy subjects were also tested to provide normative values on the simulator at baseline. METHOD At their initial evaluation (time-1), subjects' driving skills were measure...

BACKGROUND Age-related cognitive decline is often associated with unsafe driving behavior. We hypothesized that 10 active training sessions in a driving simulator increase cognitive and on-road driving performance. In addition, driving simulator training should outperform cognitive training. METHODS Ninety-one healthy active drivers (62-87 years) were randomly assigned to one of three groups:...

Low skid resistance of road marking paint is one of the major issues in the safety of vehicle drivers, cyclists, and pedestrians when traveling on the city streets. Among the variety of marking paint, two-component paint is widely used at intersections and roundabouts. Therefore, the paint used should have adequate skid resistance. The object of this study was to evaluat...