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This study defines and tests a methodology based on optimization methods to incorporate the longitudinal driving behavior of automated vehicles in the Wiedemann 99 car-following model. A pilot study was recently conducted in Portugal using a Mercedes-Benz of 2017 assisted with level 2 driving automation to gather empirical data. In total, 61 car-following events were used to support the calibration and validation tasks. The calibration error sustains the methodology\u2019s descriptive capability to simulate the driving behavior of AVs, and the validation error sustains that the calibrated model parameters can reproduce the dynamic driving behavior of AVs with reasonable consistency and robustness. A total of seven model parameters were estimated and are in line with the trends often described in the literature on automated vehicles but also highlight differences that can be explained by different development and deployment strategies. Nevertheless, since empirical data from automated vehicles are hard to get, the presented work findings are also valuable for improving and validating future modeling efforts.<\/jats:p>","DOI":"10.1155\/2022\/3073393","type":"journal-article","created":{"date-parts":[[2022,11,24]],"date-time":"2022-11-24T22:06:13Z","timestamp":1669327573000},"page":"1-17","source":"Crossref","is-referenced-by-count":2,"title":["The Longitudinal Driving Behavior of a Vehicle Assisted with Lv2 Driving Automation: An Empirical Study"],"prefix":"10.1155","volume":"2022","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4999-3483","authenticated-orcid":true,"given":"Rita","family":"Rodrigues","sequence":"first","affiliation":[{"name":"Faculty of Science and Technology of the University of Coimbra, Coimbra, Portugal"},{"name":"Rua Lu\u00eds Reis Santos, Coimbra 3030-788, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8696-5705","authenticated-orcid":true,"given":"Ana","family":"Bastos Silva","sequence":"additional","affiliation":[{"name":"Faculty of Science and Technology of the University of Coimbra, Coimbra, Portugal"},{"name":"Rua Lu\u00eds Reis Santos, Coimbra 3030-788, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9209-5750","authenticated-orcid":true,"given":"Lu\u00eds","family":"Vasconcelos","sequence":"additional","affiliation":[{"name":"Polytechnic Institute of Viseu, Viseu, Portugal"},{"name":"Campus Polit\u00e9cnico de Repeses, Viseu 3504-510, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8685-4415","authenticated-orcid":true,"given":"\u00c1lvaro","family":"Seco","sequence":"additional","affiliation":[{"name":"Faculty of Science and Technology of the University of Coimbra, Coimbra, Portugal"},{"name":"Rua Lu\u00eds Reis Santos, Coimbra 3030-788, Portugal"}]}],"member":"311","reference":[{"key":"1","doi-asserted-by":"publisher","DOI":"10.1007\/s40534-016-0117-3"},{"key":"2","article-title":"J3016_201806 taxonomy and definitions for terms related to driving automation systems for on-road motor vehicles. 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