Results 1 to 10 of about 255,732 (116)

Estimating operating speed for county road segments – Evidence from Italy

open access: yesInternational Journal of Transportation Science and Technology, 2023
Vehicle operating speed is a crucial factor for road safety, as it strictly affects occurrence and severity of crashes. Usually, 85th percentile of the operating speed distributions (i.e., V85) in free-flow traffic condition is widely accepted as a base ...
Valentina Martinelli   +4 more
doaj   +3 more sources

Impact of highway geometry and posted speed on operating speed at multi-lane highways in Egypt

open access: yesJournal of Advanced Research, 2013
The paper presents an analysis of roadway factors and posted speed limits that affect the operating speed at multi-lane highways in Egypt. Field data on multi-lane highways in Egypt are used in this investigation. The analysis considers two categories of
Ahmed M. Semeida
doaj   +3 more sources

Key Factors of the Initiation and Development of Polygonal Wear in the Wheels of a High-Speed Train

open access: yesApplied Sciences, 2020
The polygonal wear of train wheels occurs commonly in rail transport and increases the wheel–rail interaction force dramatically and has a bad effect on the safety and comfort of the train. The mechanism of polygonal wear needs to be studied.
Yue Wu   +4 more
doaj   +1 more source

The influence of wearout clutch facings on operating speed electro-pneumatic clutch actuator

open access: yesTrudy Odesskogo Politehničeskogo Universiteta, 2014
The paper is dedicated to the study of essential characteristics of electro-pneumatic clutch actuator during operation. Since the control of a clutch actuator must ensure the sustainability of all transmission service life, it is actual to determine the
О. О Ярита
doaj   +5 more sources

OPERATIONAL AND ENERGY PERFORMANCE OF 250 kW DOUBLE WHEELED VERSUS RUBBER HALF-TRACKED TRACTORS IN THE SOYBEAN SOWING [PDF]

open access: yesEngenharia Agrícola, 2020
The technological innovation in agriculture seeks to improve the performance of mechanized assemblies and, currently, rubber half-tracks are a valuable solution for agricultural tractors, combining traction performance and less soil compaction.
Lauro S. Neto   +4 more
doaj   +1 more source

Daily mobility in Brussels: challenges, tools and priority undertakings

open access: yesBrussels Studies, 2013
This synopsis makes use of the data and analyses from the first two Cahiers de l’Observatoire de la mobilité of the Brussels-Capital Region, bringing up to date the synopsis from the Citizens’ Forum of Brussels published in 2009 and adding to it ...
Michel Hubert   +3 more
doaj   +1 more source

EVALUATION OF MOBILE APPLICATIONS FOR MEASURING OPERATING SPEED ON RURAL MOUNTAINOUS ROADS: THE LOJA-CATAMAYO CASE, ECUADOR [PDF]

open access: yesProceedings on Engineering Sciences
This study evaluates the effectiveness of mobile applications for measuring operating speed on rural mountainous roads, specifically on the Loja-Catamayo route in Ecuador.
Andres David Apolo Cabrera   +2 more
doaj   +1 more source

When traffic light management prefigures mobility choices: the strategic challenges of a technical tool

open access: yesBrussels Studies, 2016
This article opens the black box of the remote controlled traffic light system used by public transport in Brussels. This technical device redistributes the temporal sharing of space in favour of public transport, which allows the constant erosion of the
Céline Brandeleer, Thomas Ermans
doaj   +1 more source

The direct cost and geography of Brussels mass transport’s operating delays

open access: yesBrussels Studies, 2007
Automobile traffic causes a decrease in the surface mass transport’s effectiveness in Brussels as in other cities. In economic terms, this corresponds to lower returns and productivity for the operator.
Frédéric Dobruszkes, Yves Fourneau
doaj   +1 more source

Research and experiment of a current-limiting HVDC circuit breaker

open access: yesThe Journal of Engineering, 2019
Existing mechanical HVDC circuit breakers (CB) are capable of interrupting HVDC currents within several tens of milliseconds, but this is too slow to satisfy the requirements of a reliable HVDC grid.
Yi Du   +5 more
doaj   +1 more source

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