Temat: speed humps - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The analysis of various measures of the speed control of the traffic in the cities and settlements of the Republic of Belarus
Autorzy:: Kapski, D.
Korzhova, A.
Powiązania:: https://bibliotekanauki.pl/articles/2140830.pdf
Data publikacji:: 2017
Wydawca:: Fundacja Centrum Badań Socjologicznych
Tematy:: road traffic
road safety
quality
forced speed limit
speed control
physical and psychological impact traffic measures
traffic accidents
speed humps
Opis:: The results of the analysis of various measures of calm of movement in cities and settlements are presented in the article. The alternative measures of physical and psychological effects on the traffic participants are considered. Particular attention is paid to the application of speed humps. They are installed on the streets of cities and settlements widely. The statistics of road traffic accidents at sites with humps in Minsk are considered. Various aspects of the effect of speed humps on accident rate have been established. And experimental studies of the instantaneous speeds of road vehicles in the installation area of speed humps have been performed. New modifications of speed humps are proposed, the design of which was developed on the basis of research of interactions with the car. Also the study investigated the effect of hump on the accident rate, delays in transportation, changes of speed and flow density. In addition, specific proposals have been developed. They are included in the technical normative legal acts in our country partially. That proposals allows to increase the overall quality of traffic (minimize the total economic, environmental and emergency losses from installation of speed humps). For example, alternative variants of design decisions on improvement of quality traffic safety are considered. In addition, the article considers other measures of forced speed control on streets network of cities and settlements in the country.
Źródło:: Journal of Sustainable Development of Transport and Logistics; 2017, 2, 2; 26-34
2520-2979
Pojawia się w:: Journal of Sustainable Development of Transport and Logistics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Badanie wpływu budowlanych środków uspokojenia ruchu na zmiany prędkości na wybranych przejściach dla pieszych w województwie dolnośląskim
Investigating the impact of traffic calming devices to change vehicle speed at selected crossings in The Lower Silesia
Autorzy:: Matczuk-Pisarek, M.
Powiązania:: https://bibliotekanauki.pl/articles/953643.pdf
Data publikacji:: 2016
Wydawca:: Stowarzyszenie Inżynierów i Techników Komunikacji Rzeczpospolitej Polskiej
Tematy:: środki uspokojenia ruchu
wyniesione przejścia dla pieszych
progi płytowe
progi wyspowe
prędkość
traffic calming devices
raised crosswalks
speed humps
speed cushions
speed
Opis:: Budowlane środki uspokojenia ruchu stosowane w sąsiedztwie przejść dla pieszych mają za zadanie zmniejszyć prędkość wjazdu na przejście a tym samym zwiększyć bezpieczeństwo niechronionych uczestników ruchu. W artykule przedstawiono wyniki badań prędkości pojazdów i dokonano ich analizy dla dwóch rodzajów urządzeń: progów zwalniających wyspowych i wyniesionych przejść dla pieszych.
Traffic calming devices are believed to be influential to efficiently reduce speed when approaching crossings. This paper presents the analysis of speed measurements results for two types of traffic calming devices (tcd): raised crosswalks and speed cushions.
Źródło:: Drogownictwo; 2016, 12; 407-412
0012-6357
Pojawia się w:: Drogownictwo
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Analysis and control of nonlinear vibration of autonomous vehicle passing through hybrid consecutive speed control humps
Autorzy:: Yang, Zhiyong
Wang, Long
Yu, Yanjun
Mou, Zhenping
Ou, Minghui
Powiązania:: https://bibliotekanauki.pl/articles/2173727.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: autonomous vehicles
hybrid consecutive speed control humps
nonlinear vibration
safety
comfort
pojazd autonomiczny
próg zwalniający
wibracje nieliniowe
bezpieczeństwo
komfort
Opis:: In order to improve the safety and comfort of autonomous vehicles passing through the expressway, relevant departments of expressway construction often design and lay consecutive speed control humps (SCHs) with cross-sections of different shapes according to different road conditions, such as the combination of trapezoidal and sinusoidal SCHs. In this paper, we conduct a study about the nonlinear dynamic characteristics of the autonomous vehicle passing through hybrid SCHs. Firstly, a four-degree-of-freedom (4-DOF) nonlinear model of the vehicle suspension and the speed coupling excitation model under hybrid SCHs are established. Then the fourth-fifth order Runge–Kutta method is used to simulate the nonlinear system, and its nonlinear dynamic characteristics are analyzed. The results show that chaotic motion occurs when the vehicle passes through hybrid SCHs, and the speed range of chaotic motion is obtained. Then, a direct variable feedback control method is used to suppress the chaotic vibration of semi-active suspension vehicles, and the effect is verified by simulation experiments. Finally, this paper presents a multi-objective optimization model based on a genetic algorithm (GA) for active suspension vehicles. The optimization model selects the vertical displacement and pitching angle of the vehicle body as the objective function. The research results of this paper can provide information on the ride comfort’s optimization for autonomous vehicles passing through hybrid SCHs and on the design of vehicle suspension system.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2022, 70, 6; art. no. e143643
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

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