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Advani, Mukti
- Quantification of reduction in air pollution due to bypassing traffic in Delhi, India
Abstract Views :188 |
PDF Views:95
Authors
Affiliations
1 Transportation Planning and Environment Division, CSIR-Central Road Research Institute, New Delhi 110 025, IN
1 Transportation Planning and Environment Division, CSIR-Central Road Research Institute, New Delhi 110 025, IN
Source
Current Science, Vol 120, No 10 (2021), Pagination: 1600-1610Abstract
The worldwide known relationship between transport and air pollution is demanding innovative solutions for satisfying the mobility needs with minimum pollution. While reducing the mobility demand is a longterm target, the most commonly adopted approach is to decongest the ‘hot spots’ having an alarming level of pollution. The main objective of providing bypasses and expressways is to divert the through traffic coming into the city. Delhi is one of the most congested and polluted cities in India. Among the various sources, vehicular pollution is a significant source of air pollution. Different policies and strategies have been developed to decongest and depollute Delhi. The Eastern Peripheral Expressway (EPE) is one such option implemented to decongest the national capital of India by diverting the traffic not destined for Delhi. It becomes essential to evaluate the performance of such significant infrastructural investments for better decision making in the future. Accordingly, the present study quantifies the impact of constructed EPE in terms of diverted traffic and the reduction of vehicular pollution from the capital of India. For this, various primary surveys like classified traffic volume, origin–destination and fuel station surveys were conducted in the study area. Vehicle kilometre travelled for all vehicle types was calculated using the primary data, and this parameter is considered for quantifying vehicular emissions. The results showed that reduction of vehicular emission due to diverted traffic was 0.7% of PM (PM2.5), 7.1% of NOx and 2.5% CO in the total vehicular emission load of Delhi.Keywords
Air pollution, bypassing traffic, expressway, travel demand estimation, vehicular emission load.Full Text
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- Gradual sustainability approach for urban transport through subtle measures
Abstract Views :163 |
PDF Views:75
Authors
Mukti Advani
1,
Niraj Sharma
1,
Madhu Errampalli
1,
Yash Rane
2,
Rajni Dhyani
1,
P. V. Pradeep Kumar
1
Affiliations
1 Central Road Research Institute, New Delhi 110 025, IN
2 Parul University, Vadodara 391 760, IN
1 Central Road Research Institute, New Delhi 110 025, IN
2 Parul University, Vadodara 391 760, IN
Source
Current Science, Vol 122, No 9 (2022), Pagination: 1036-1043Abstract
Capacity enhancement and demand reduction are the two most common approaches considered to deal with increased congestion in urban areas. The first approach involves construction of various infrastructure for providing increased capacity for motorized vehicles, whereas the second approach includes restricting movement of road users from congested area(s). Experiences from across the world have demonstrated that both the approaches have failed to resolve the problem of congestion. The present study has been carried out to assess traffic characteristics around five metro (rail) station areas in New Delhi, India, to examine the effect of subtle changes towards improvement for all road users. The impact of alternate traffic circulation plans, based on various traffic management strategies around these metro stations, has been compared using microscopic traffic simulation. The study has clearly demonstrated that parking related policies (including segregated parking lanes for cycle rickshaws and electric-rickshaws) can result in improvement in vehicular speed by 2 to 6 km/h in the influence zone of the selected metro stations for all categories of motorized vehicles. This is expected to result in total daily savings of 593 litres of petrol, 103 litres diesel and 643 kg CNG, and total CO2e (equivalent) reduction of 3.5 tonne/day in all the five metro stations. It is evident that the sustainable scenarios (viz. segregation/shifting of on-street parking, signal design, etc.) or similar to those that have been suggested, would result in significant reduction in fuel consumption and corresponding CO2e (equivalent) emissions. Implementing agencies can choose the scenario best suited to them, among the given options.Keywords
Metro station, sustainability, traffic simulation, urban transport, vehicular emission.Full Text
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