Road Design Factors and Their Interactions with Speed and Speed Limits
نویسندگان
چکیده
The road environment can affect driver speed choice through influencing both the driver’s perception of their current speed, and the speed that they think is appropriate for the road. These influences and their effects on speed can therefore affect crash rates. This report reviews the influence of various factors within the road environment, including the geometry of the road, the roadside environment, explicit information from road signs and markings, and temporary factors such as lighting conditions and the presence of other road users. The review also covers how these environmental factors interact with other factors related to the driver and the vehicle. The concept of the ‘self explaining road’ is also discussed.
منابع مشابه
Multicriteria Cruise Control Design Considering Geographic and Traffic Conditions
The paper presents the design of cruise control systems considering road and traffic information during the design of speed trajectories. Several factors are considered such as road inclinations, traffic lights, preceding vehicles, speed limits, engine emissions and travel times. The purpose of speed design is to reduce longitudinal energy, fuel consumption and engine emissions without a signif...
متن کاملSimulating the Effects of Type and Spacing of Traffic Calming Measures on Urban Road Capacity
One of the major reasons for accidents is speed. Top of Form Inappropriate speed has been identified as the most important causal factor for serious traffic accidents. Traffic calming measures (TCMs) are engineering measures that are widely implemented to improve road safety by considerably reducing vehicle speed. TCMs have been widely used in urban areas to reduce vehicle flow rat...
متن کاملDynamic Speed Adaptation for Path Tracking Based on Curvature Information and Speed Limits †
A critical concern of autonomous vehicles is safety. Different approaches have tried to enhance driving safety to reduce the number of fatal crashes and severe injuries. As an example, Intelligent Speed Adaptation (ISA) systems warn the driver when the vehicle exceeds the recommended speed limit. However, these systems only take into account fixed speed limits without considering factors like r...
متن کاملAn ANP-based Model for Location of Fixed Speed Cameras
Speeding is a major cause of traffic accidents and is estimated to be the cause of about 40% of fatalities in road accidents. Speed is a major accident risk factor and affects both rate and severity of traffic accidents. This importance has led to universal use of intelligent control systems for maintaining road safety by enforcing speed regulations. In this study, a modeling is carried out by ...
متن کاملDetermination of the three-axle bus critical speed in the sense of rollover stability respect to the driver command and the road conditions
In this paper, a three-axle bus rollover threshold and the effective parameters are studied. The rollover threshold is a speed that automotive is passing without occurring rollover. The objective is a determination of the heavy vehicle rollover critical speed while turning. For this purpose, a three-axle bus is studied. The dynamic equations related to rollover is extracted, and then rollover c...
متن کامل