Results 31 to 40 of about 27,834 (245)

Grade impact investigation during stopping sight distance determination on 3D road environment

, 2021
In the present research, Stopping Sight Distance (SSD) adequacy is assessed through a three-dimensional approach, which associates road visibility in terms of grade effect.
S. Mavromatis, Vassilios Matragos
semanticscholar   +1 more source

Reliability-based analysis of highway geometric Elements: A systematic review

Cogent Engineering, 2022
Conventional highway design approaches have primarily focused on the use of guidelines in the design of highways. These design guidelines provide nominal safety where conservative percentile values of the design inputs are used to account for the ...
Abayomi Afolayan, Oladapo Abiola Samson, Said Easa, Funmilayo Modupe Alayaki, Olusegun Folorunso   +4 more
doaj   +1 more source

Reliability-Based Safety Evaluation of Headlight Sight Distance Applied to Road Sag Curve Standards

IEEE Access, 2020
Sight distance is key to ensure safe road geometric design under all circumstances. Road design standards propose models simulating nighttime driving that contemplate the features of vehicle frontlighting systems to address the design of sag curves ...
F. Andrade-Catano, C. De Santos-Berbel, M. Castro   +2 more
doaj   +1 more source

Examining the feasibility of current spiral curve design controls for LiDAR‐based automated vehicles

IET Intelligent Transport Systems, 2023
Enabling large‐scale deployment of automated vehicles (AVs) in the near future requires answering the question firstly: whether AVs could safely adapt to as‐built road geometry?
Shuyi Wang, Chengyang Mao, Yang Ma, Jinzhou Liu, Bin Yu   +4 more
doaj   +1 more source

Analytical Method for 3-D Stopping Sight Distance Adequacy Investigation [PDF]

Journal of Civil Engineering and Architecture, 2015
The adopted 2-D SSD (stopping sight distance) adequacy investigation in current design practice may lead to design deficiencies due to inaccurate calculation of the available sight distance. Although this concern has been identified by many research studies in the past, none of them suggested a comprehensive methodology to simulate from a 3-D ...
null Fotis S. Mertzanis, null Antonis Boutsakis, null Ikaros-Georgios Kaparakis, null Stergios Mavromatis, null Basil Psarianos   +4 more
openaire   +1 more source

Investigation of Rainfall Impact on Traffic Characteristics of Urban Roads [PDF]

JES: Journal of Engineering Sciences
Adverse weather conditions such as rainfall, significantly affect road safety and traffic performance by altering surface conditions and driver behavior.
Terseer Ako, Lenin Oyesigye, Pathias Ndyabijuka, Jonan Bainomugisha, Philip Tibenderana, Sholagberu Abdulkadir   +5 more
doaj   +1 more source

The Sight Distance Issues with Retrofitted Single-Lane HOV Facilities

International Journal of Transportation Science and Technology, 2013
It is well-known that obstruction inside a highway horizontal curve will lead to impaired sight distance. Highway alignment design standards in terms of the minimum horizontal curve radius are specified to allow for adequate stopping sight distance at ...
Zhongren Wang
doaj   +1 more source

A Rural Road Accident Probability Model Based on Single-Vehicle Hazard Properties including Hazard Color and Mobility: A Driving Simulator Study

Journal of Advanced Transportation, 2020
Road safety has recently been considered an important issue in the country. Single-vehicle accident statistics show the importance of this issue. From a safety viewpoint, drivers need to have a reasonable time window for hazard recognition and reaction ...
Sina Sheikholeslami, Amin M. Boroujerdian, Morteza Asadamraji   +2 more
doaj   +1 more source

Effects of vegetation type and horizontal curve radius on the rate of tree pruning to provide line of sight on main access roads

Journal of Forest Science, 2014
The present investigation was carried out to assess the influence of vegetation type and horizontal curve radius on the rate of tree pruning to provide the line of sight on horizontal curves in Caspian forests of Iran. For this purpose, the DBH (diameter
M. Nasiri, M.R. Pourmajidian
doaj   +1 more source

More‐than‐gender? Moving beyond gendered expectations of divergent learners in early childhood education

British Educational Research Journal, EarlyView.
Abstract In this paper, we explore how neurodivergent ways of being in early education are often gendered. The intersectionalities of gender and neurodivergence often lead to fixed expectations that perpetuate binary interpretations, pathologisations, missed diagnoses and a lack of curated support.
Ruth Churchill Dower, Hannah Hogarth
wiley   +1 more source