scholarly journals The lower emissions Brenner Corridor

2021 ◽  
Vol 10 (1) ◽  
pp. 86-89
Author(s):  
Ilaria De Biasi
Keyword(s):  
Air Quality ◽  
Traffic Management ◽  
Capacity Management ◽  
Environmental Benefits ◽  
Climate Protection ◽  
Noise Abatement ◽  
Speed Limits ◽  
Road Capacity

The lower emissions Brenner Corridor The project is carried out with the aim of creating a concept of ‘lower emissions corridor’ (LEC) for the A22 motorway by implementing and validating a set of policies having the goal to provide clear environmental benefits in terms of air quality, climate protection and noise abatement, i.e. dynamic road capacity management, dynamic speed limits management and dynamic integrated traffic management.

scholarly journals Simulation and measurement of air quality in the traffic congestion area

2021 ◽  
Vol 31 (1) ◽  
Author(s):  
Shin Yu ◽  
Chang Tang Chang ◽  
Chih Ming Ma
Keyword(s):  
Air Quality ◽  
Traffic Congestion ◽  
Traffic Management ◽  
Reference Model ◽  
Dispersion Model ◽  
Fluid Model ◽  
Three Dimensional ◽  
Vehicle Speed ◽  
Management Plans ◽  
Dimensional Distribution

AbstractThe traffic congestion in the Hsuehshan tunnel and at the Toucheng interchange has led to traffic-related air pollution with increasing concern. To ensure the authenticity of our simulation, the concentration of the last 150 m in Hsuehshan tunnel was simulated using the computational fluid dynamics fluid model. The air quality at the Toucheng interchange along a 2 km length highway was simulated using the California Line Source Dispersion Model. The differences in air quality between rush hours and normal traffic conditions were also investigated. An unmanned aerial vehicle (UAV) with installed PM2.5 sensors was developed to obtain the three-dimensional distribution of pollutants. On different roads, during the weekend, the concentrations of pollutants such as SOx, CO, NO, and PM2.5 were observed to be in the range of 0.003–0.008, 7.5–15, 1.5–2.5 ppm, and 40–80 μg m− 3, respectively. On weekdays, the vehicle speed and the natural wind were 60 km h− 1 and 2.0 m s− 1, respectively. On weekdays, the SOx, CO, NO, and PM2.5 concentrations were found to be in the range of 0.002–0.003, 3–9, 0.7–1.8 ppm, and 35–50 μg m− 3, respectively. The UAV was used to verify that the PM2.5 concentrations of vertical changes at heights of 9.0, 7.0, 5.0, and 3.0 m were 45–48, 30–35, 25–30, and 50–52 μg m− 3, respectively. In addition, the predicted PM2.5 concentrations were 40–45, 25–30, 45–48, and 45–50 μg m− 3 on weekdays. These results provide a reference model for environmental impact assessments of long tunnels and traffic jam-prone areas. These models and data are useful for transportation planners in the context of creating traffic management plans.

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.

scholarly journals Analisis Dampak Lalu Lintas Pembangunan Apartemen Hundred Residence Jl. Raya Gubeng Kota Surabaya

2020 ◽  
Vol 3 (1) ◽  
pp. 48
Author(s):  
Sapto Adiputro ◽  
Rudy Santosa
Keyword(s):  
Traffic Management ◽  
Negative Impact ◽  
Poor Performance ◽  
Average Deviation ◽  
Service Levels ◽  
Final Project ◽  
Road Capacity ◽  
Qualitative Descriptive ◽  
Development Area ◽  
And Performance

The construction of Hundred Residence Apartment Jl. Raya Gubeng No. 102-106, Surabaya will provide an additional volume of traffic that burdens the streets around Jl. Raya Gubeng. Referring to these conditions, this final project research aims to explain about how the performance of the affected road for existing conditions, then due to the generation of Hundred Residence Apartments within the period of the plan and provide advice related to traffic management and engineering to minimize the occurrence of decreased service levels and performance intersections in the area around development. This thesis research uses quantitative and qualitative descriptive methods that refer to the 1997 Indonesian Road Capacity Manual (MKJI). From the results of the analysis it is concluded that the worst performance that ranks first is at the intersection of Jl. Pandegiling - Jl. Dinoyo - Jl. Keputran - Jl. Sulawesi. The existing conditions in 2019 have shown poor performance with the value of LOS E at peak hours in the afternoon and the average deviation delay value of 53.71 seconds / smp, then the analysis of conditions in the predicted year of 2026 shows a declining performance with LOS values F at the peak hour of the afternoon and the average intersection delay value of 178.92 seconds / junior high. This should be a concern so that later the existence of apartments does not add a negative impact on the performance of traffic around the development area. For this reason, traffic management and engineering needs to be done both inside and outside the apartment area to anticipate problems that are expected to emerge.

scholarly journals Integrating in situ Measurements and City Scale Modelling to Assess the COVID–19 Lockdown Effects on Emissions and Air Quality in Athens, Greece

Atmosphere ◽  
2020 ◽  
Vol 11 (11) ◽  
pp. 1174 ◽  
Author(s):  
Georgios Grivas ◽  
Eleni Athanasopoulou ◽  
Anastasia Kakouri ◽  
Jennifer Bailey ◽  
Eleni Liakakou ◽  
...  
Keyword(s):  
Air Quality ◽  
Atmospheric Chemistry ◽  
Traffic Management ◽  
Management Strategies ◽  
Road Transport ◽  
Scale Model ◽  
Ambient Exposure ◽  
Mean Concentration ◽  
Reduced Emissions

The lockdown measures implemented worldwide to slow the spread of the COVID–19 pandemic have allowed for a unique real-world experiment, regarding the impacts of drastic emission cutbacks on urban air quality. In this study we assess the effects of a 7-week (23 March–10 May 2020) lockdown in the Greater Area of Athens, coupling in situ observations with estimations from a meteorology-atmospheric chemistry model. Measurements in central Athens during the lockdown were compared with levels during the pre- and post-lockdown 3-week periods and with respective levels in the four previous years. We examined regulatory pollutants as well as CO2, black carbon (BC) and source-specific BC components. Models were run for pre-lockdown and lockdown periods, under baseline and reduced-emissions scenarios. The in-situ results indicate mean concentration reductions of 30–35% for traffic-related pollutants in Athens (NO2, CO, BC from fossil fuel combustion), compared to the pre-lockdown period. A large reduction (53%) was observed also for the urban CO2 enhancement while the reduction for PM2.5 was subtler (18%). Significant reductions were also observed when comparing the 2020 lockdown period with past years. However, levels rebounded immediately following the lift of the general lockdown. The decrease in measured NO2 concentrations was reproduced by the implementation of the city scale model, under a realistic reduced-emissions scenario for the lockdown period, anchored at a 46% decline of road transport activity. The model permitted the assessment of air quality improvements on a spatial scale, indicating that NO2 mean concentration reductions in areas of the Athens basin reached up to 50%. The findings suggest a potential for local traffic management strategies to reduce ambient exposure and to minimize exceedances of air quality standards for primary pollutants.

Traffic dynamics around weaving section influenced by accident: Cellular automata approach

2015 ◽  
Vol 26 (03) ◽  
pp. 1550026 ◽  
Author(s):  
Lin-Peng Kong ◽  
Xin-Gang Li ◽  
William H. K. Lam
Keyword(s):  
Traffic Management ◽  
Control Measures ◽  
Effective Control ◽  
Traffic Dynamics ◽  
Traffic Jam ◽  
The Road ◽  
Road Capacity ◽  
Prone Area ◽  
Accident Conditions ◽  
The Impact

The weaving section, as a typical bottleneck, is one source of vehicle conflicts and an accident-prone area. Traffic accident will block lanes and the road capacity will be reduced. Several models have been established to study the dynamics around traffic bottlenecks. However, little attention has been paid to study the complex traffic dynamics influenced by the combined effects of bottleneck and accident. This paper presents a cellular automaton model to characterize accident-induced traffic behavior around the weaving section. Some effective control measures are proposed and verified for traffic management under accident condition. The total flux as a function of inflow rates, the phase diagrams, the spatial-temporal diagrams, and the density and velocity profiles are presented to analyze the impact of accident. It was shown that the proposed control measures for weaving traffic can improve the capacity of weaving section under both normal and accident conditions; the accidents occurring on median lane in the weaving section are more inclined to cause traffic jam and reduce road capacity; the capacity of weaving section will be greatly reduced when the accident happens downstream the weaving section.

The Highways Agency Approach to Traffic Management

1997 ◽  
Vol 50 (1) ◽  
pp. 5-13
Author(s):  
Mel G. Quinn
Keyword(s):  
Traffic Management ◽  
Environmental Issues ◽  
Road Transport ◽  
The Other ◽  
Foreseeable Future ◽  
Vital Part ◽  
Road Capacity ◽  
Road Space ◽  
The Uk ◽  
Do So

Road transport plays a vital part in the UK economy and will continue to do so for the foreseeable future. However, the environmental issues surrounding transport are also of growing concern to the nation, with roads seen as a key element in the environmental debate. These two issues are in conflict, with one pointing to the need for greater road capacity to accommodate more vehicles while the other suggests a limit on road space and fewer vehicles. The Highways Agency has a responsibility to help resolve this dilemma and is doing so by placing increased emphasis on making more efficient use of existing roads.

Applying Map Databases to Advanced Navigation and Driver Assistance Systems

2001 ◽  
Vol 54 (3) ◽  
pp. 355-363 ◽  
Author(s):  
J. Martin Rowell
Keyword(s):  
North America ◽  
Traffic Management ◽  
Routing Algorithms ◽  
Route Guidance ◽  
Driver Assistance ◽  
Driver Assistance Systems ◽  
Floating Car Data ◽  
Road Capacity ◽  
Assistance Systems ◽  
Dynamic Route

Navigation map databases have evolved during the last 10 years in coverage, content and accuracy to such a degree that they are being used (and considered) for applications beyond vehicle navigation. For a number of advanced driver assistance systems (ADAS) in Europe and North America, the navigation maps are being enhanced to offer new functions. This will complement dynamic route guidance, with location referencing, descriptions of delays, floating car data and re-routeing, all requiring developments in traffic management, road capacity balancing and routing algorithms.

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