scholarly journals Speed bumps impact on motor transport noise

2015 ◽  
Vol 10 (2) ◽  
pp. 191-199 ◽  
Author(s):  
Tomas Januševičius ◽  
Rasa Akelaitytė
Keyword(s):  
Motor Vehicle ◽  
Driver Behavior ◽  
Sound Level ◽  
Motor Transport ◽  
Speed Regulation ◽  
Different Types ◽  
Aggressive Driver

Most accidents are caused by excessive speed or aggressive driver behavior. One of the most popular speed regulation implement is speed bumps. However, there are some problems with speed bumps as well – it has been noticed that speed bumps increase motor vehicle-induced noise. This article presents investigation on how speed bumps increase motor vehicle-induced noise. The investigations were carried out on Klaipėda and Vilnius streets during different time of the day and year. Brüel&Kjær sound level meters type 2260 and 2270 were used to investigate how much noise is caused by vehicles passing different types of speed bumps.

MODELING OF MOTOR TRANSPORT EXHAUST POLLUTANT DISPERSION

2007 ◽  
Vol 15 (1) ◽  
pp. 39-46 ◽  
Author(s):  
Petras Vaitiekūnas ◽  
Reda Banaitytė
Keyword(s):  
Environmental Protection Agency ◽  
Motor Vehicle ◽  
Negative Impact ◽  
Anthropogenic Activities ◽  
Pollutant Dispersion ◽  
Pollution Level ◽  
Dispersion Modeling ◽  
Pollution Dispersion ◽  
Motor Transport ◽  
Pollution Modeling

Pollution is a major problem in all countries, even developed ones. It is the major environmental negative impact of anthropogenic activities affecting ecology. There are two major ways for assessment of negative impact of motor transport flow intensity and pollution level: monitoring the air or modeling pollutant dispersion. It is very important to estimate different unknown air modeling programs. In this work modeling is to be executed by the US EPA (United States Environmental Protection Agency) the so‐called “the best possible existing software for strategic environmental assessment”. That is also recommended by the Ministry of Environment of the Republic of Lithuania. In this work pollution modeling was executed for the northern part of Vilnius (the network of streets Geležinis Vilkas ‐ Ozas ‐ Kalvarijos). For motor vehicle pollution mathematical modeling, it is necessary to evaluate meteorological parameters like temperature, humidity, the wind direction and speed. Modeling software can also estimate relief conditions. Pollution emission measurements were used, and pollution dispersion modeling was performed. The main target was to evaluate pollutant dispersion from motor transport in the analysed area of Vilnius. During investigation maximum hourly, daily and annual concentrations of carbon monoxide, nitrogen oxide, sulphur dioxide, volatile organic compounds and particulate matter were observed.

scholarly journals Вплив інгредієнтів автотранспортних викидів на стан асиміляційного апарату декоративних квітникових рослин

2011 ◽  
Vol 3 (1) ◽  
pp. 118-124
Author(s):  
O. P. Pryimak ◽  
A. N. Pugach
Keyword(s):  
Motor Vehicle ◽  
Ornamental Plants ◽  
Negative Influence ◽  
The State ◽  
Zinnia Elegans ◽  
Vehicle Emission ◽  
Tagetes Patula ◽  
Motor Transport ◽  
Salvia Splendens ◽  
Transport Emission

The effect of motor vehicle emission ingredients on the state of assimilative apparatus of decorative ornamental plants is studied in Dnepropetrovsk. The morphometric indices of leaves of studied species are discussed. The changes of the leaves area and their amount on a plant are shown. The damages of assimilative organs and its structure abnormalities are revealed. The negative influence of motor transport emission on forming and growth of leaves was determined. The Aster novі-belgii L. and Tagetes patula L. are resistant, but Begonia×semperflorens hort, Salvia splendens L. and Zinnia elegans Jacq. are sensitive to the influence of emissions. 

scholarly journals FEATURES OF THE STUDY OF THE ENVIRONMENTAL SITUATION AROUND THE OBJECTS OF ROAD TRANSPORT INFRASTRUCTURE

2021 ◽  
Vol 1 (50) ◽  
pp. 170-179
Author(s):  
Rabosh I ◽  
◽  
Khrutba V ◽  
Kobzysta O ◽  
◽  
...  
Keyword(s):  
Motor Vehicle ◽  
Road Transport ◽  
Environmental Safety ◽  
The State ◽  
Transport Infrastructure ◽  
Negative Consequences ◽  
Motor Transport ◽  
The Road ◽  
Environmental Situation ◽  
The Impact

In recent years, the state of the road transport infrastructure in Ukraine has deteriorated significantly. With the process of urbanization and the expansion of the transport infrastructure, the ecological danger of the functioning of these strategically important objects increases, which requires effective methods of detailed study of the state of environmental components in areas of urban pollution in order to prevent negative consequences. Working with the problematic, using robots, we analyzed the methods to monitor the environmental situation around the road transport infrastructure for the development of recommendations for advancing efficiency. An algorithm for assessing the environmental situation around the objects of motor transport infrastructure is considered, based on monitoring the impact of these objects on the components of the environment and determining the main factors of this influence. The regularities and dependences of the influence of the motor transport infrastructure from the standpoint of environmental safety have been established. The indicators of pollution of the components of the environment in the study areas and methods of their production are analyzed. It has been concluded that a complex combination of chemical research methods with biodication is observable, makes it possible to analyze the effect of vehicles on various components of the environment (atmospheric air, soil and soil solutions, plants, animals, surface waters, etc.) and to establish the level of anthropogenic load. KEY WORDS: MOTOR VEHICLE INFRASTRUCTURE, ENVIRONMENTAL SAFETY, HARMFUL SUBSTANCES, POLLUTION

Inattention and Misjudgment in Older Drivers Involved in Automobile Collisions in Hawai'I, 1986–1991

1997 ◽  
Vol 41 (1) ◽  
pp. 120-124 ◽  
Author(s):  
Karl Kim ◽  
Charlotte Albert-Thenet ◽  
Max Vercruyssen
Keyword(s):  
Police Officers ◽  
Motor Vehicle ◽  
Driver Behavior ◽  
Older Drivers ◽  
Motor Vehicle Collisions ◽  
Vehicle Collisions ◽  
Vehicle Collision ◽  
Police Reports ◽  
Left Turns ◽  
Right Turns On Red

Motor vehicle collision reports filed by police officers may be useful in investigating driver behavior and identifying potential causal attributes of accident involvement. Inattention and misjudgment were two options appearing on police reports to explain the cause of motor vehicle collisions in Hawai'i from 1986 to 1991. Examination of all crash reports (n = 218,718) revealed that inattention and misjudgment are serious problems for older drivers (65 years and older, n = 14,179). For instance, for the 75 to 84 year old drivers involved in collisions (n = 3659), 36% were classified as inattentive and 22% were identified as having misjudgment errors in driving; for the 85 and older drivers (n = 340), these percentages were 41 and 22, respectively. Of the collisions involving older drivers, 48% were at intersections. Reports of inattention and misjudgments were highest at dusk and dawn compared to other times of the day and night. Among the rear-end collisions, 65% of the older rear-enders were inattentive drivers. Strong associations of inattentive older drivers were found with being a broadsider (49%), side-swiper (45%) and headoner. Misjudgments among older drivers were most associated with being a side-swiper (41% from the opposite direction and 37% from the same direction). Regarding vehicle maneuvers prior to the crash, inattention was associated with right turns on red (61%), U-turns (57%), starting from park (56%), backing (56%), changing lanes (48%), merging (45%), and making left turns (40%). Misjudgment errors were most likely to occur when overtaking (44%), parking (41%), making left turns (39%), and changing lanes (39%). Dangerous actions common among inattentive older drivers included disregarding traffic controls (72%), following too closely (67%), going the wrong way (54%), failing to yield (52%), improper turns (48%), and speeding (45%). Older drivers classified as having misjudgments were most likely to be involved in improper overtaking (46%), failure to yield (41%), and improper turns (39%).

scholarly journals Epilepsy and motor vehicle driving - A Symposium held in Québec City, November 1998

2002 ◽  
Vol 29 (4) ◽  
pp. 315-325 ◽  
Author(s):  
Guy-M. Rémillard ◽  
Benjamin G. Zifkin ◽  
Frederick Andermann
Keyword(s):  
Medical Association ◽  
Motor Vehicle ◽  
Mandatory Reporting ◽  
Current Evidence ◽  
Quebec City ◽  
Motor Transport ◽  
Strong Disagreement ◽  
The Usa ◽  
Canadian Council ◽  
Motor Vehicle Driving

Background:This report summarizes an invitational symposium on epilepsy and Canadian laws governing motor vehicle driving held in Québec City in November 1998.Methods:Invited neurological experts from Canada, the USA, and Europe; and representatives of provincial and territorial licensing bodies, the Canadian Council of Motor Transport Administrators, the Canadian Medical Protective Association, and the Canadian Medical Association participated. An edited version of transcribed audiotapes was prepared. Specific issues discussed were whether or not a physician should be required to report a patient with epilepsy to the licensing authority (mandatory reporting), the nature and quantification of the risks posed by epileptic drivers, and what would be a reasonable law regulating driving by people with epilepsy in Canada.Results:The consensus among medical experts was that mandatory reporting should be abolished in Canada and that a 6-12 month seizure-free period was appropriate before most patients could return to driving private cars. Experts also believed that these standards should be uniform across Canada. There was strong disagreement with the recommendation of the Canadian Medical Association that all such drivers be reported to provincial licensing authorities even in provinces without mandatory reporting rules.Conclusion:Physicians should be familiar with and follow the rules regarding epilepsy and driving in the provinces where they practice. Nevertheless, current evidence is against mandatory physician reporting of drivers with epilepsy and the neurologists recommended that this be abolished throughout Canada. Shorter seizure-free intervals should also be considered before resuming driving of private cars.

Discussing the Parking Ways on Different Types of Residential Areas - Taking Jinzhou City as an Example

2012 ◽  
Vol 209-211 ◽  
pp. 548-552 ◽  
Author(s):  
Chun Xiang Liu ◽  
Dong Xu ◽  
Miao Xia
Keyword(s):  
Motor Vehicle ◽  
Urban Residents ◽  
Residential Areas ◽  
Different Types ◽  
Residential Parking ◽  
Parking Facilities ◽  
Current Standards

In recent years, the possession of private cars of urban residents in our country has increased quickly, making residential parking problems more serious. That has caused parking inconvenience and confusion environment in residential areas. These problems must be given enough attention when it comes to the building of supporting facilities in urban residential areas. According to the analysis of current standards of residential parking facilities and the characters of parking manners, we take a developing city, Jinzhou, as an example and research the motor vehicle parking status in residential areas, we propose the view that formulating the corresponding parking facilities indicator standards according to different types settlements, solving needs of residents in different types of residential areas in different ways, and the proposal that design of residential areas static transport facilities and parking spaces should reflect humane, intelligent and fair, and have flexible to adapt changes of need in future.

scholarly journals KAJIAN PENERAPAN SENSOR MIC-CONDENSER DALAM RANCANG BANGUN SOUND LEVEL METER DIGITAL.

JURNAL ELTEK ◽  
2018 ◽  
Vol 16 (1) ◽  
pp. 86
Author(s):  
Achmad Komarudin ◽  
Hariyadi Singgih ◽  
Moh. Luqman
Keyword(s):  
Data Processing ◽  
Sound Pressure ◽  
Motor Vehicle ◽  
Sound Level ◽  
Motor Vehicles ◽  
Sound Level Meter ◽  
Vehicle Exhaust ◽  
Sound Sources ◽  
Level Meter ◽  
Digital Sound

Noise levels in the industrial and urban streets have a threshold value that has been determined by the Regulation of the State Minister of the Environment Number 07 Year 2009 for motor vehicles. And Minister of Manpower Number: KEP-51 / MEN / 1999 for industrial environment. To know the value of noise is required a Digital Level Sound Meter gauge that can be used as a measuring instrument of sound intensity noise value of motor vehicle exhaust and other sound sources. This tool can change the amount of sound pressure converted in LCD display. This Digital Sound Level Meter is used to measure the feasibility of thresholds on exhaust and other sound sources. The purpose of this research is to study the application of Mic-condenser sensors in Digital Sound Level Meter design The research method is to design and design the system, using mic condenser sensor, designing signal conditioner using op-amp with series of Absolute Value Modulus (MAV), which can rectify AC voltage into DC using Microkontroller ATMega 8535 as data processing result of data processing which has become the quantity sound pressure with decibels (dBA) is presented in LCD devices The results of the system test show that this Digital Sound Level Meter can run and can display the sound pressure level captured by the mic condenser sensor, and from the result of the Digital Sound Level Meter test compared to the comparison tool obtained an error of 2.94%.

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