Journal ArticleDOI
Dynamic user equilibrium model for combined activity-travel choices using activity-travel supernetwork representation
TLDR
In this article, the authors jointly modeled activity location, time of participation, duration, and route choice decisions in a single unified dynamic framework referred to as Activity-Travel Networks (ATNs), where virtual links representing activity choices are added to augment the travel network to represent additional choice dimensions.Abstract:
Integrated urban transportation models have several benefits over sequential models including consistent solutions, quicker convergence, and more realistic representation of behavior. Static models have been integrated using the concept of Supernetworks. However integrated dynamic transport models are less common. In this paper, activity location, time of participation, duration, and route choice decisions are jointly modeled in a single unified dynamic framework referred to as Activity-Travel Networks (ATNs). ATNs is a type of Supernetwork where virtual links representing activity choices are added to augment the travel network to represent additional choice dimensions. Each route in the augmented network represents a set of travel and activity arcs. Therefore, choosing a route is analogous to choosing an activity location, duration, time of participation, and travel route. A cell-based transmission model (CTM) is embedded to capture the traffic flow dynamics. The dynamic user equilibrium (DUE) behavior requires that all used routes (activity-travel sequences) provide equal and greater utility compared to unused routes. An equivalent variational inequality problem is obtained. A solution method based on route-swapping algorithm is tested on a hypothetical network under different demand levels and parameter assumptions.read more
Citations
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Influence of social networks on latent choice of electric cars : a mixed logit specification using experimental design data
TL;DR: In this paper, a stated choice experiment was conducted to investigate the effects of vehicle attributes, contextual and social network attributes on the latent demand for electric cars, and the results indicated substantive differences between these two models in terms of the shape of utility curves.
Journal ArticleDOI
Inverse optimization with endogenous arrival time constraints to calibrate the household activity pattern problem
Joseph Y.J. Chow,Will Recker +1 more
TL;DR: In this paper, an inverse problem is formulated as a mixed integer linear programming problem such that coefficients of the objectives are jointly estimated along with the goal arrival times to the activities, and a unique invariant common prior is used to regularize the estimation method.
Journal ArticleDOI
Multiclass traffic assignment model for mixed traffic flow of human-driven vehicles and connected and autonomous vehicles
TL;DR: A multiclass traffic assignment model, where HDV users and CAV users follow different route choice principles, characterized by the cross-nested logit (CNL) model and user equilibrium (UE) model, respectively is proposed, which can assist transportation decision-makers to design effective planning and operational strategies to leverage the advantages of CAVs and manage traffic congestion under mixed traffic flows.
Journal ArticleDOI
Incorporating free-floating car-sharing into an activity-based dynamic user equilibrium model: A demand-side model
TL;DR: A tolerance-based dynamic user equilibrium model of activity-travel scheduling that formulates free-floating SC as an alternative transport mode for conducting daily activities is proposed that embeds the choice of SC into daily trip chains by extending the state-of-the-art multi-state supernetwork representation.
Journal ArticleDOI
An activity-based approach for scheduling multimodal transit services
TL;DR: In this article, the authors proposed a new activity-based transit assignment model for investigating the scheduling (or timetabling) problem of transit services in multi-modal transit networks, which can be used to generate the short-term and long-term timetables of multimodal transit lines for transit operations and service planning purposes.
References
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Journal ArticleDOI
The cell transmission model: a dynamic representation of highway traffic consistent with the hydrodynamic theory
TL;DR: In this paper, a simple representation of traffic on a highway with a single entrance and exit is presented, which can be used to predict traffic's evolution over time and space, including transient phenomena such as the building, propagation, and dissipation of queues.
Journal ArticleDOI
The cell transmission model, part ii: network traffic
TL;DR: This article shows how the evolution of multi-commodity traffic flows over complex networks can be predicted over time, based on a simple macroscopic computer representation of traffic flow that is consistent with the kinematic wave theory under all traffic conditions.