Gregory Root

Research AssociateITS-IrvineUC Irvine19791982
FacultyUniversity of South Florida19821987
Transportation ManagerURS Corporation19872002
Transportation ManagerT.Y. Lin International20022006
Transportation Planning ManagerAim Engineering and Surveying, Inc.2006

Record last updated: December 10, 2024.

ITS Affiliations

Recent Projects

Chaining Behavior in Urban Tripmaking — Phase 1

Complete | Jan 1992—Feb 1983

Research Team:

Will Recker (lead), Michael McNally, Gregory Root, Carleton Waters

Department(s):

Civil and Environmental Engineering

An Activity-Based Approach to Complex Travel Behavior

Complete | Sep 1984—Jun 1986

Research Team:

Will Recker (lead), Michael McNally, Gregory Root

Department(s):

Civil and Environmental Engineering

Recent Research Products

published journal article | Sep 2010

An empirical analysis of urban activity patterns
Geographical Analysis

published journal article | Jul 1986

A model of complex travel behavior: Part I—Theoretical development
Transportation Research Part A: General

published journal article | Jul 1986

A model of complex travel behavior: Part II—An operational model
Transportation Research Part A: General

Publications

Note: Publications listed below are generally limited to those associated activity during Gregory Root's affiliation with ITS-Irvine. The list may be incomplete. For a more comprehensive list, please consult other data sources in their Related Information.

Journal Articles

Wilfred W. Recker, Michael G. McNally and Gregory S. Root (2010) “An empirical analysis of urban activity patterns”, Geographical Analysis, 19(2), pp. 166–181. Available at: 10.1111/j.1538-4632.1987.tb00122.x. [ITS-Irvine record]
W. W. Recker, M. G. McNally and G. S. Root (1986) “A model of complex travel behavior: Part I—Theoretical development”, Transportation Research Part A: General, 20(4), pp. 307–318. Available at: 10.1016/0191-2607(86)90089-0. [ITS-Irvine record]
W. W. Recker, M. G. McNally and G. S. Root (1986) “A model of complex travel behavior: Part II—An operational model”, Transportation Research Part A: General, 20(4), pp. 319–330. Available at: 10.1016/0191-2607(86)90090-7. [ITS-Irvine record]
Wilfred W. Recker, Gregory S. Root and Michael G. McNally (1986) “Classification analysis of traffic improvement sites”, Journal of Transportation Engineering, 112(2), pp. 184–198. Available at: 10.1061/(asce)0733-947x(1986)112:2(184). [ITS-Irvine record]
Wilfred W. Recker, Michael G. McNally and Gregory S. Root (1985) “Travel/activity analysis: Pattern recognition, classification and interpretation”, Transportation Research Part A: General, 19(4), pp. 279–296. Available at: 10.1016/0191-2607(85)90064-0. [ITS-Irvine record]
Wilfred W. Recker, Michael G. McNally and Gregory S. Root (1985) “Flyovers and high flow arterial concept”, Journal of Transportation Engineering, 111(2), pp. 139–154. Available at: 10.1061/(asce)0733-947x(1985)111:2(139). [ITS-Irvine record]

Conference Papers

W. W. Recker, G. S. Root and M. G. McNally (1983) “Activity-based approaches to modeling complex travel behavior: Issues and challenges”, in Proceedings, Transportation Planning Research Colloquium. Delft. [ITS-Irvine record]

Working Papers

Will Recker, Gregory S. Root and Michael G. McNally (1985) Classification Analysis of Traffic Improvement Sites. Working Paper UCI-ITS-WP-85-6. Institute of Transportation Studies, Irvine. Available at: https://escholarship.org/uc/item/1gn830g5. [ITS-Irvine record]
Will Recker, Michael G. McNally and Gregory S. Root (1985) A Model of Complex Travel Behavior: Part II. An Operational Model. Working Paper UCI-ITS-WP-85-9, UCI-ITS-AS-WP-85-3. Institute of Transportation Studies, Irvine. Available at: https://escholarship.org/uc/item/6k62j20h. [ITS-Irvine record]
Will Recker, Michael G. McNally and Gregory S. Root (1985) A Model of Complex Travel Behavior: Part I. Theoretical Model. Working Paper UCI-ITS-WP-85-8, UCI-ITS-AS-WP-85-2. Institute of Transportation Studies, Irvine. Available at: https://escholarship.org/uc/item/60t3p87t. [ITS-Irvine record]
Will Recker, Michael G. McNally and Gregory S. Root (1985) A Methodology for Activity-Based Travel Analysis: The STARCHILD Model. Working Paper UCI-ITS-WP-85-7, UCI-ITS-AS-WP-85-1. Institute of Transportation Studies, Irvine. Available at: https://escholarship.org/uc/item/9sx4p9kj. [ITS-Irvine record]
Will Recker, Michael G. McNally, Gregory S. Root, Patricia K. Lyon, Mark A. Smiley and Carleton D. Waters (1983) Chaining Behavior in Urban Tripmaking: Interim Report. Working Paper UCI-ITS-WP-83-8, UCI-ITS-AS-WP-83-1. Institute of Transportation Studies, Irvine. Available at: https://escholarship.org/uc/item/9x18g2pb. [ITS-Irvine record]
Will Recker, Michael G. McNally, Gregory S. Root, Patricia K. Lyon, Mark A. Smiley and Carleton D. Waters (1983) Chaining Behavior in Urban Tripmaking: Appendices to Interim Report. Working Paper UCI-ITS-WP-83-9, UCI-ITS-AS-WP-83-2. Institute of Transportation Studies, Irvine. Available at: https://escholarship.org/uc/item/94b4701w. [ITS-Irvine record]
Gregory S. Root, Michael G. McNally, Will Recker and Mark A. Smiley (1981) Chaining Behavior in Urban Tripmaking: A Critical Review. Working Paper UCI-ITS-WP-81-6, UCI-ITS-AS-WP-81-4. Institute of Transportation Studies, Irvine. Available at: https://escholarship.org/uc/item/3qx10644. [ITS-Irvine record]
Gregory S. Root and Will Recker (1981) Toward a Dynamic Model of Individual Activity Pattern Formulation. Working Paper UCI-ITS-WP-81-4, UCI-ITS-AS-WP-81-2. Institute of Transportation Studies, Irvine. Available at: https://escholarship.org/uc/item/7t72q459. [ITS-Irvine record]
Will Recker, Michael G. McNally and Gregory S. Root (1981) Application of Pattern Recognition Theory to Activity Pattern Analysis. Working Paper UCI-ITS-WP-81-3, UCI-ITS-AS-WP-81-1. Institute of Transportation Studies, Irvine. Available at: https://escholarship.org/uc/item/49x4t5cg. [ITS-Irvine record]
Will Recker, Michael G. McNally and Gregory S. Root (1981) An Empirical Analysis of the Impact of Energy Restrictions on the Execution of Activity Patterns. Working Paper UCI-ITS-WP-81-5, UCI-ITS-AS-WP-81-3. Institute of Transportation Studies, Irvine. Available at: https://escholarship.org/uc/item/0xv3p9cx. [ITS-Irvine record]
Gregory S. Root and Will Recker (1981) Toward a Dynamic Model of Individual Activity Pattern Formulation. Working Paper UCI-ITS-WP-81-4, UCI-ITS-AS-WP-81-2. Institute of Transportation Studies, Irvine. Available at: https://escholarship.org/uc/item/7t72q459. [ITS-Irvine record]

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