نتایج جستجو برای: portable roadway

تعداد نتایج: 37657  

Journal: :The Journal of the Acoustical Society of America 1975

2006

37 INTRODUCTION As drivers age, the skills necessary for safe driving, such as vision, reflexes, flexibility, hearing and reaction time, begin to deteriorate. To cope with these changes, many drivers choose to adjust their driving habits as a means of retaining their mobility. Adjusting driving habits is one part of the puzzle; improvements to the roadway environment can be another. Traffic eng...

Journal: :Journal of safety research 2009
Lynne M Rochette Kristen A Conner Gary A Smith

OBJECTIVE To describe traumatic brain injury (TBI) among injured roadway users. Aim 1 assessed the association of age, gender, alcohol/drug use, safety equipment use, type of roadway user, metropolitan area, and primary payer with motor vehicle-related TBI outcome. Aim 2 assessed the relationship of motor vehicle-related TBI and risk/protective factors with medical and economic outcomes. METH...

Maghsood Pooryari Milad Zamanifar, Mohammad Reza Ahadi,

Earthquakes are among those natural hazards which may lead to disruption in the function of arterial traffic routes. Road networks are particularly vulnerable, due to their geographical dispersion, extensive functions and structural reliance on favourable geophysical conditions. Traffic functionality after a natural disaster and the repair/rehabilitation cost of roads are crucial considerations...

2008
Kara M. Kockelman William J. Murray Jason Lemp Jason D. Lemp

Pricing of roadways opens doors for infrastructure financing, and congestion pricing seeks to address inefficiencies in roadway operations. This paper takes a cost-benefit approach to illuminate how the costs of infrastructure can be offset via pricing, while ascertaining the welfare impacts of flat-toll, standard congestion pricing, and credit-based congestion pricing policies. While most road...

Journal: :Geotechnical and Geological Engineering 2021

In recent years, with the extension of coal mine at depth, rock bursts are more and frequent. Therefore, research roadway support pressure relief has become key to prevent burst. this paper, primary high strength hydraulic fracturing measures studied analysed. The emphasizes matching characteristics materials, strengthen protection active roadway, realize an integrated system. Considering stron...

Journal: :Emergency medicine journal : EMJ 2004
M A Tiska M Adu-Ampofo G Boakye L Tuuli C N Mock

OBJECTIVES Few low income countries have emergency medical services to provide prehospital medical care and transport to road traffic crash casualties. In Ghana most roadway casualties receive care and transport to the hospital from taxi, bus, or truck drivers. This study reports the methods used to devise a model for prehospital trauma training for commercial drivers in Ghana. METHODS Over 3...

2009
Mohammad Ali Paolo Falcone Jonas Sjöberg

In this paper, we investigate predictive control approaches to the problem of roadway departure prevention via steering and braking. We assume a sensing infrastructure detecting road geometry and consider a two layers architecture consisting of a threat assessment and an intervention layer. In particular, the upper threat assessment layer detects the risk of roadway departure or vehicle instabi...

Journal: :Journal of child psychology and psychiatry, and allied disciplines 2016
Molly A Nikolas Alexis L Elmore Luke Franzen Elizabeth O'Neal Joseph K Kearney Jodie M Plumert

BACKGROUND Injury risk from car-bicycle collisions is particularly high among youth with attention-deficit hyperactivity disorder (ADHD). Here, we capitalized on advances in virtual environment technology to safely and systematically examine road-crossing behavior among child cyclists with and without ADHD. METHODS Sixty-three youth (26 with ADHD, 37 non-ADHD controls) ages 10-14 years crosse...

Journal: :E3S web of conferences 2021

Aiming at the problem of large-scale deformation track and alleys in East Second Mining Area, numerical analysis method is used to analyze stress law roadway. The results show that critical depth roadway 800m, shear deep about 8.7MPa left right shoulders, vertical increases sharply range 0~5.5m from center roadway, 6~ peak value reached within 8m, plastic zone roof 2.6m, zones are 5.2m 5.4m, re...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید