Results 201 to 210 of about 2,901 (237)

Motorcyclist perception response time in stopping sight distance situations

Safety Science, 2012
One of the most effective engineering measures is the provision of an exclusive motorcycle lane that separates motorcycles from other mixed traffic to reduce traffic congestion and motorcycle crashes. Even though the existing exclusive motorcycle lanes in Malaysia reduced the incidents of motorcycle crashes with other vehicles, the design of this ...
Seyed Rasoul Davoodi, Hussain H, Mahdieh Pazhouhanfar   +2 more
exaly   +2 more sources

Driver Perception–Brake Response in Stopping Sight Distance Situations

Transportation Research Record, 1998
One of the most important requirements in highway design is the provision of adequate stopping sight distance at every point along the roadway. At a minimum, this sight distance should be long enough to enable a vehicle traveling at or near the design speed to stop before reaching a stationary object in its path.
Daniel B Fambro
exaly   +2 more sources

New Stopping Sight Distance Model for Use in Highway Geometric Design

Transportation Research Record, 2000
Stopping sight distance is an important design parameter in that it defines the minimum sight distance that must be provided at all points along the highway. Thus, it influences geometric design values, construction costs, and highway safety. Stopping sight distance is defined as the sum of two components—brake reaction distance and braking distance ...
Daniel B Fambro
exaly   +2 more sources

Safety Effects of Limited Stopping Sight Distance on Crest Vertical Curves

Transportation Research Record, 2000
Previous studies that examined the relationship between stopping sight distance and safety have been inconclusive and inconsistent; however, the fact that a relationship has not been established does not necessarily imply that stopping sight distance is not a contributing factor in some crashes.
Kay Fitzpatrick, Daniel B. Fambro, Angela M. Stoddard   +2 more
exaly   +2 more sources

The Stopping Sight Distance Test for Freeway Based on the Operating Speed

Applied Mechanics and Materials, 2011
In this paper, the stopping sight distance of passenger car based on the operating speed was regarded as guideposts, and its corresponding radius of horizontal curve and vertical curve was got according to the calculated results, and available for reference and application in the alignment design and safety evaluation for freeway.
exaly   +2 more sources

Stopping Sight Distance Requirements for Basic Turbo Roundabouts

Journal of Transportation Engineering Part A: Systems
Easa Said M
exaly   +2 more sources

Reliability of sight distance at stop-control intersections

Proceedings of the Institution of Civil Engineers - Transport, 2016
The American Association of State Highway and Transportation Officials presents guidelines for intersection sight distance (ISD) based on extreme values of the component design variables such as speed and time gap. The guidelines for a stopped vehicle at a stop-control intersection on a minor road assume that the component design variables are ...
Said M. Easa, Altaf Hussain
openaire   +1 more source

Stopping Sight Distance and Horizontal Sight Line Offsets at Horizontal Curves

Transportation Research Record: Journal of the Transportation Research Board, 2014
Criteria for the design of horizontal curves implicitly rely on design speed to produce safe and efficient designs, particularly for horizontal sight line offsets and stopping sight distances. Current design guidance provides a method for calculating minimum horizontal sight line offsets that is accurate and valid only when both driver and object are ...
Jonathan S. Wood, Eric T. Donnell
openaire   +1 more source

Three-Dimensional Stop-Control Intersection Sight Distance

Transportation Research Record: Journal of the Transportation Research Board, 2006
Intersection sight distance is an important design element. A stopped vehicle on the minor road needs sufficient sight distance to depart (cross, turn left, or turn right) safely, even though an approaching vehicle on the major road comes into view. Current AASHTO policy assumes that both minor and major roads are straight and intersect at right angles.
Said M. Easa, Zain A. Ali
openaire   +1 more source

Required Stopping Sight Distance on Crest Vertical Curves

Journal of Transportation Engineering, 2001
Required stopping sight distance (SSD), used to calculate the minimum rate of vertical curvature or the minimum length of a crest vertical curve (CVC), is usually calculated on the assumption that the grade of the braking section is zero (G = 0). This assumption is not the worst case and may lead to the selection of a CVC on which there is a segment ...
Ioannis Taignidis, George Kanellaidis
openaire   +1 more source