TY - CHAP
T1 - Contextual Adjustment of the Institute of Transportation Engineers Trip Generation Rates for Small and Medium Urban Areas in Louisiana
AU - Doulabi, Saba
AU - Wilmot, Chester
AU - Stopher, Peter
AU - Antipova, Angela
N1 - Funding Information:
The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This research was funded by the Louisiana Department of Transportation and Development (LA DOTD), and the Louisiana Transportation Research Center (Award Number: 18-4SS/DOTLT1000212).
Publisher Copyright:
© National Academy of Sciences: Transportation Research Board 2022.
PY - 2022/8
Y1 - 2022/8
N2 - The Institute of Transportation Engineers (ITE) Trip Generation Handbook has been in common use since the 1970s to estimate vehicle trips generated by more than 172 land use categories as a function of establishment size. However, observed trip rates display a huge error range across different land use categories and urban contexts. Although contextual adjustment factors can ameliorate the error in the ITE trip generation estimates considerably, local site-specific trip generation rates should be collected for this purpose. Given the huge time and monetary costs of data collection, adjusting the ITE trip generation rate is mainly done in large metropolitan areas such as Portland, OR, Baltimore, MD, and San Francisco, CA, while it is ignored by many jurisdictions in small to medium-sized metropolitan areas. Here, the ITE trip generation rates for strip mall land use in Louisiana are adjusted by considering the extent to which the built environment characteristics can improve the accuracy of estimated vehicle trip generation rates in smaller urban areas. Vehicle trip data were collected for two consecutive days at 40 strip malls across eight different urban areas of Louisiana to develop whole day and afternoon peak hour contextual adjustment factors for the given land use category across the study area. The results of this study show noticeable improvement for whole day analysis compared with the ITE method by producing a 42% reduction in root mean square error .
AB - The Institute of Transportation Engineers (ITE) Trip Generation Handbook has been in common use since the 1970s to estimate vehicle trips generated by more than 172 land use categories as a function of establishment size. However, observed trip rates display a huge error range across different land use categories and urban contexts. Although contextual adjustment factors can ameliorate the error in the ITE trip generation estimates considerably, local site-specific trip generation rates should be collected for this purpose. Given the huge time and monetary costs of data collection, adjusting the ITE trip generation rate is mainly done in large metropolitan areas such as Portland, OR, Baltimore, MD, and San Francisco, CA, while it is ignored by many jurisdictions in small to medium-sized metropolitan areas. Here, the ITE trip generation rates for strip mall land use in Louisiana are adjusted by considering the extent to which the built environment characteristics can improve the accuracy of estimated vehicle trip generation rates in smaller urban areas. Vehicle trip data were collected for two consecutive days at 40 strip malls across eight different urban areas of Louisiana to develop whole day and afternoon peak hour contextual adjustment factors for the given land use category across the study area. The results of this study show noticeable improvement for whole day analysis compared with the ITE method by producing a 42% reduction in root mean square error .
KW - planning and analysis
KW - trip generation modeling
UR - http://www.scopus.com/inward/record.url?scp=85136207639&partnerID=8YFLogxK
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U2 - 10.1177/03611981221082590
DO - 10.1177/03611981221082590
M3 - Chapter
AN - SCOPUS:85136207639
T3 - Transportation Research Record
SP - 44
EP - 55
BT - Transportation Research Record
PB - SAGE Publications Ltd
ER -