Works (11)

Updated: July 5th, 2023 15:38

2020 journal article

Geospatial Variation of Real-World Tailpipe Emission Rates for Light-Duty Gasoline Vehicles

Environmental Science and Technology, 54(14), 8968–8979.

Contributors: T. Khan n, H. Frey n, N. Rastogi n & T. Wei n

MeSH headings : Air Pollutants / analysis; Carbon Dioxide / analysis; Carbon Monoxide; Environmental Monitoring; Gasoline / analysis; Motor Vehicles; Nitrogen Oxides / analysis; Vehicle Emissions / analysis
TL;DR: Spatial variability in real-world on-road tailpipe light duty gasoline vehicle nitrogen oxides, hydrocarbon, carbon monoxide, and carbon dioxide emission rates, the locations of emissions hotspots, and factors that explain spatial variability are quantified. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: ORCID
Added: July 9, 2020

2019 journal article

Effect of Air-Conditioning on Light Duty Gasoline Vehicles Fuel Economy

TRANSPORTATION RESEARCH RECORD, 2673(5), 131–141.

By: T. Khan n & H. Frey n

Contributors: T. Khan n & H. Frey n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: July 15, 2019

2018 conference paper

Development and validation of transit bus energy use rate models

Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 2018-June. http://www.scopus.com/inward/record.url?eid=2-s2.0-85056318902&partnerID=MN8TOARS

By: T. Wei, H. Christopher Frey & T. Khan

Contributors: T. Wei, H. Christopher Frey & T. Khan

Source: ORCID
Added: December 14, 2020

2018 conference paper

Development of updated MOVES Lite: A simplified version of MOVES

Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 2018-June. http://www.scopus.com/inward/record.url?eid=2-s2.0-85056328664&partnerID=MN8TOARS

By: T. Khan, H. Christopher Frey & T. Wei

Contributors: T. Khan, H. Christopher Frey & T. Wei

Source: ORCID
Added: December 14, 2020

2017 journal article

Comparison of real-world and certification emission rates for light duty gasoline vehicles

SCIENCE OF THE TOTAL ENVIRONMENT, 622, 790–800.

By: T. Khan n & H. Frey n

Contributors: T. Khan n & H. Frey n

author keywords: Certification tests; Emission standards; PEMS; Chassis dynamometer; Driving cycles; Cold start emissions
TL;DR: A systematic comparison of the real-world emission rates of U.S. light duty gasoline vehicles (LDGVs) versus CL, and emission standards has not been previously reported, and comparisons of CAERs and standards are sensitive to cold start emissions. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2017 conference paper

Development of simplified models of CNG, diesel, and hybrid transit bus energy use

Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA. http://www.scopus.com/inward/record.url?eid=2-s2.0-85039153359&partnerID=MN8TOARS

By: T. Wei, T. Khan & H. Frey

Contributors: T. Wei, T. Khan & H. Frey

Source: ORCID
Added: February 5, 2019

2017 conference paper

Key factors affecting inter-county variability in moves county-level energy inventory

Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA. http://www.scopus.com/inward/record.url?eid=2-s2.0-85039169682&partnerID=MN8TOARS

By: T. Khan & H. Frey

Contributors: T. Khan & H. Frey

Source: ORCID
Added: February 5, 2019

2016 journal article

Evaluation of Light-Duty Gasoline Vehicle Rated Fuel Economy Based on In-Use Measurements

TRANSPORTATION RESEARCH RECORD, 2570(2570), 21–29.

By: T. Khan n & H. Frey n

Contributors: T. Khan n & H. Frey n

UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2016 conference paper

Geospatial variation of real-world emissions from a passenger car

Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 4, 2799–2822. http://www.scopus.com/inward/record.url?eid=2-s2.0-85014820615&partnerID=MN8TOARS

By: T. Khan & H. Frey

Contributors: T. Khan & H. Frey

Source: ORCID
Added: February 5, 2019

2015 conference paper

Illustrative comparison between rated and real-world fuel economy and emissions

Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 3, 1623–1641. http://www.scopus.com/inward/record.url?eid=2-s2.0-84983738698&partnerID=MN8TOARS

By: T. Khan & H. Frey

Contributors: T. Khan & H. Frey

Source: ORCID
Added: February 5, 2019

2013 journal article

Air Quality and Climate Impacts Due to CNG Conversion of Motor Vehicles in Dhaka, Bangladesh

Environmental Science & Technology, 47(24), 13907–13916.

By: Z. Wadud* & T. Khan*

Contributors: Z. Wadud* & T. Khan*

MeSH headings : Air Pollutants / analysis; Air Pollutants / economics; Air Pollution / analysis; Air Pollution / economics; Bangladesh; Carbon Dioxide / analysis; Cities; Climate; Data Collection; Greenhouse Effect / economics; Humans; Motor Vehicles; Natural Gas / analysis; Uncertainty; Vehicle Emissions / analysis
TL;DR: Ex-post the air quality and climate benefits of the CNG conversion policy, including monetary valuations, are quantified through an impact pathway approach, indicating that such policies can and should be undertaken on the grounds of improving local air pollution alone and that precautions should be taken to reduce the potentially unintended increases in GHG emissions or other unintended effects. (via Semantic Scholar)
UN Sustainable Development Goal Categories
13. Climate Action (OpenAlex)
Source: ORCID
Added: February 5, 2019

Employment

Updated: December 13th, 2020 22:09

2020 - present

North Carolina State University Raleigh, North Carolina, US
Postdoctoral Researcher Civil, Construction, and Environmental Engineering

2014 - 2019

North Carolina State University Raleigh, NC, US
Graduate Research Assistant Civil, Construction & Environmental Engineering

2010 - 2014

Stamford University Bangladesh Dhaka, Dhaka District, BD
Faculty Civil Engineering

2009 - 2010

Bangladesh University of Engineering and Technology Dhaka, Dhaka District, BD
Research Assistant Civil Engineering

Education

Updated: December 13th, 2020 22:16

2014 - 2020

North Carolina State University Raleigh, NC, US
Doctor of Philosophy in Civil (Environmental) Engineering Civil, Construction & Environmental Engineering

2009 - 2012

Bangladesh University of Engineering and Technology Dhaka, Dhaka District, BD
Master of Science in Civil (Transportation) Engineering Civil Engineering

2004 - 2009

Bangladesh University of Engineering and Technology Dhaka, Dhaka District, BD
Bachelor of Science in Civil (Transportation) Engineering Civil Engineering

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