scholarly journals The level of air quality at public transport stations: The Case of Torhailoch-Ayat main road in Addis Ababa

2022 ◽  
Vol 24 ◽  
pp. 101328
Author(s):  
Mulugeta Soruma ◽  
Mintesnot Woldeamanuel
Keyword(s):  
Air Quality ◽  
Public Transport ◽  
Addis Ababa ◽  
Main Road

scholarly journals Air quality sensors in public transport stops and cross-system communication

2021 ◽  
Vol 3 (1) ◽  
pp. 5-10
Author(s):  
Dan-Marius Mustață
Keyword(s):  
Air Quality ◽  
Public Transport ◽  
Traffic Management ◽  
Transport Systems ◽  
View Point ◽  
System Communication ◽  
Warning Messages ◽  
Different Types ◽  
Cross System ◽  
State Of Art

The purpose of this article is to present a state of art implementation of air quality sensors in public transport stops. Effects on health due to different types of pollutants are summarized as well. Functional scope of the solutions, via warning messages displayed for passengers waiting at these stops, including a cross system communication between traffic management and public transport systems, are also focused. Analysis of existing sensor types from multiple view point including functions, types of measured pollutants, price ranges and comparisons are outlined.

The Role of Mass Transport for Sustainable Public Transit in Developing Cities

2018 ◽  
pp. 416-442
Author(s):  
Belew Dagnew Bogale
Keyword(s):  
Public Transport ◽  
Traffic Congestion ◽  
Traffic Management ◽  
Public Transit ◽  
Addis Ababa ◽  
Sustainable Transportation ◽  
The Public ◽  
Developing Cities ◽  
Recent Project ◽  
Transit Performance

The need for an efficient public mass transportation system in the context of developing countries can well be overemphasized since a majority of the urban population continues to be either captive walkers or users of the public transport facility. In Addis Ababa, inadequacy of public transit and improper traffic management issues are dominant problems. Evidence indicates that solutions related to traffic congestion and accidents are still left behind the city. However, it is expected that the recent project interventions and initiatives will enhance the capability of the public transit to deliver effective and sustainable transportation. This chapter evaluates the public transit performance, the initiatives towards terminals, and the future models for implementation. It concludes that an integrated public mass transit system is vital to a sustainable future public transport in developing cities in general and in Addis Ababa in particular. Recommendations are forwarded in the chapter.

scholarly journals Assessment of Air Quality After the Implementation of Compressed Natural Gas (CNG) as Fuel in Public Transport in Delhi, India

2006 ◽  
Vol 115 (1-3) ◽  
pp. 405-417 ◽  
Author(s):  
Khaiwal Ravindra ◽  
Eric Wauters ◽  
Sushil K. Tyagi ◽  
Suman Mor ◽  
René Van Grieken
Keyword(s):  
Air Quality ◽  
Natural Gas ◽  
Public Transport ◽  
Compressed Natural Gas

scholarly journals Evaluating Atmospheric Pollutants from Urban Buses under Real-World Conditions: Implications of the Main Public Transport Mode in São Paulo, Brazil

Atmosphere ◽  
2019 ◽  
Vol 10 (3) ◽  
pp. 108 ◽  
Author(s):  
Thiago Nogueira ◽  
Pamela Dominutti ◽  
Marcelo Vieira-Filho ◽  
Adalgiza Fornaro ◽  
Maria Andrade
Keyword(s):  
Public Health ◽  
Air Quality ◽  
Public Transport ◽  
Sao Paulo ◽  
Atmospheric Pollutants ◽  
Transport Sector ◽  
São Paulo ◽  
Transport Mode ◽  
The Public ◽  
The Impact

The broad expanse of the urban metropolitan area of São Paulo (MASP) has made buses, the predominant public transport mode for commuters in the city. In 2016, the bus fleet in the MASP reached 56,354 buses and it was responsible for more than 12 million daily trips. Here, we evaluate for the first time, the emission profile of gaseous and particulate pollutants from buses running on 7% biodiesel + 93% petroleum diesel and their spatial distribution in the MASP. This novel study, based on four bus terminal experiments, provides an extensive analysis of atmospheric pollutants of interest to public health and climate changes, such as CO2, CO, NOx, VOCs, PM10, PM2.5 and their constituents (black carbon (BC) and elements). Our results suggest that the renovation of the bus fleet from Euro II to Euro V and the incorporation of electric buses had a noticeable impact (by a factor of up to three) on the CO2 emissions and caused a decrease in NO emissions, by a factor of four to five. In addition, a comparison with previous Brazilian studies, shows that the newer bus fleet in the MASP emits fewer particles. Emissions from the public transport sector have implications for public health and air quality, not only by introducing reactive pollutants into the atmosphere but also by exposing the commuters to harmful concentrations. Our findings make a relevant contribution to the understanding of emissions from diesel-powered buses and about the impact of these new vehicular technologies on the air quality in the MASP.

Air Quality in a Semi-Enclosed Public Transport Interchange Station in Rush Hour

2014 ◽  
Vol 638-640 ◽  
pp. 2077-2081
Author(s):  
Yan Feng Li ◽  
Meng Zhao ◽  
Xin Xin Lin
Keyword(s):  
Carbon Monoxide ◽  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Public Transport ◽  
Ventilation System ◽  
Operating Conditions ◽  
Eddy Simulation ◽  
Site Survey ◽  
Large Eddy

Indoor air quality in a public transport interchange station in rush hour has been studied. Carbon monoxide is selected as the main pollutant for description of air quality. Ventilation systems, bus traffic and passenger flow, air quality have been investigated by on-site survey. Large eddy simulation technology has been used to analyze indoor air quality of public transport interchange station. The boundary conditions are determined according to the measured date. Indoor air quality results at heights of 0.8m and 1.6m in rush hour and two operating conditions of public transport interchange station are calculated. Results have shown carbon monoxide concentrations at height of 0.8m are higher than those at height of 1.6m. Air quality would reach the harmful degree within 5min to 10min if the ventilation system is not operating. The ventilation system should be operated continuously during the peak hour in order to meet the requirement of indoor air quality standards.

Corrigendum to “Results from a pilot-scale air quality study in Addis Ababa, Ethiopia”

2006 ◽  
Vol 40 (38) ◽  
pp. 7455 ◽  
Author(s):  
V. Etyemezian ◽  
M. Tesfaye ◽  
A. Yimer ◽  
M. Ali ◽  
J.C. Chow ◽  
...  
Keyword(s):  
Air Quality ◽  
Addis Ababa ◽  
Pilot Scale ◽  
Quality Study
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