Transportation Research Part B: Methodological (transportation-research-part-b-methodological)

Journal positioning

Transportation Research Part B (Methodological) is the Elsevier methodological flagship of the transportation research family, publishing work whose primary contribution is a methodological or theoretical advance in transportation modeling and analysis: traffic flow theory, network equilibrium and traffic assignment, transportation network design and optimization, travel-demand and discrete-choice modeling, transport economics methods, and freight/logistics modeling. The defining expectation is a generalizable method, model, or theorem — a new formulation, a proven property, a new estimator or algorithm with analytical justification — not an applied case study that uses existing methods. A well-executed empirical application with no methodological novelty belongs in Part A; this skill is a fit / venue-selection / re-framing tool. It does not replace the journal's current official author guidelines. Before submitting, re-check the live Transportation Research Part B Guide for Authors.

When to trigger

• The author names Part B for a transportation modeling, network, choice, or transport-economics manuscript and wants a fit/framing check.
• A paper must be re-framed from "we applied a model to this city/dataset" into a generalizable methodological contribution with analytical results.
• The author is deciding among Part B (methodological), Part A (policy/behavior), Part C (emerging technologies), and Part E (logistics/transportation economics applications).
• The author needs Part B's modeling-rigor and proof expectations and its desk-reject heuristics.

Scope & topic fit

• Traffic flow theory: kinematic-wave and car-following models, macroscopic fundamental diagrams, network loading, with new analytical or modeling results.
• Network equilibrium and traffic assignment: user/system equilibrium, dynamic traffic assignment, existence/uniqueness and convergence properties.
• Transportation network design and optimization: bilevel/robust/stochastic formulations, exact and approximation algorithms with performance guarantees.
• Travel-demand and discrete-choice modeling: new model structures, identification and estimation theory, behavioral econometrics for transportation.
• Transport economics methods: congestion pricing, capacity and investment theory, mechanism design — when the contribution is methodological, not a policy case.
• Freight, logistics, and supply-chain modeling when the advance is a formulation, algorithm, or analytical property rather than an industry case study.

Method & evidence bar

• The central object is a method, model, or theorem with a clear, generalizable contribution; analytical results (existence, uniqueness, optimality, convergence, identification) are stated and proven where claimed.
• Assumptions must be explicit and reasonable; a result that holds only under assumptions that trivialize the problem is not a contribution.
• Algorithms require complexity or convergence analysis, or rigorous computational evidence on benchmark instances, not a single illustrative run.
• Econometric/choice contributions must address identification and estimation properties, not merely report coefficient estimates from one dataset.
• Numerical experiments validate and illustrate the method; they support but never substitute for the analytical contribution.
• Position precisely against the closest prior models/theorems: state what is new (weaker assumptions, broader network class, tighter bound, new identification).

Structure & house style

• Standard methodological-article structure: precise problem formulation, model/method development, analytical results (propositions/theorems with proofs), and numerical experiments; Part B publishes full-length methodological articles, so route applied or short pieces elsewhere and re-check current article types on the live guide.
• The introduction motivates the methodological gap in the transportation literature, not the policy importance of a corridor or city.
• Notation must be standard and consistent; the formulation is stated precisely before any result, and proofs appear in-text or in an appendix per current rules.
• Figures and tables serve the method (convergence plots, sensitivity to network size, benchmark comparisons); the paper stands on its formulation and results.
• Supplementary/appendix material carries long proofs and full computational details per the current policy.

Official-submission checklist

• Before giving submission-ready advice, read ../../resources/source-basis.md and ../../resources/official-source-map.md; start from the Elsevier anchors, then cite the current Transportation Research Part B Guide for Authors page you checked.
• Search the live site for "Transportation Research Part B guide for authors" and follow the current Elsevier/Editorial Manager version; confirm you are targeting Part B (Methodological), not Part A/C/E.
• Re-check article types, length expectations, and structured-abstract or highlights requirements if applicable.
• Confirm data/code availability expectations for numerical experiments and any benchmark-instance sharing policy.
• Re-check competing-interests, funding, author-contribution (CRediT), and AI-use disclosure requirements.
• If the live official instructions conflict with this skill, the official instructions win.

Pre-submission self-check

• The contribution is a generalizable method/model/theorem, not an application of existing methods to one dataset.
• Every analytical claim (existence/uniqueness/optimality/convergence/identification) has a complete, correct proof or rigorous justification.
• Assumptions are explicit and non-trivializing, and the result's scope is clearly delimited.
• Novelty is pinned to specific prior models/theorems (weaker assumptions / broader class / tighter bound / new identification).
• Numerical experiments illustrate and validate but do not substitute for the analytical contribution.
• The paper targets Part B specifically, not Part A/C/E, and notation/formulation is precise.

Common desk-reject triggers

• An applied case study that uses existing models with no methodological advance (a Part A fit).
• An algorithm with no complexity/convergence analysis and only a single illustrative run.
• A choice/econometric model reporting estimates from one dataset with no identification or estimation contribution.
• Results stated without proofs, or proofs that are incomplete, incorrect, or rely on trivializing assumptions.
• Scope mismatch: a pure operations-research, pure machine-learning, or technology-deployment paper with transportation only as a label.
• Better framed for the technology-focused Part C or the logistics-applications Part E.

Re-routing decision

• Policy, behavior, or empirical analysis without methodological novelty → Transportation Research Part A.
• Emerging-technology / sensing / data-driven ITS focus → Transportation Research Part C.
• Logistics and transportation-economics applications → Transportation Research Part E.
• Network optimization with no transportation object as the core → a dedicated operations-research venue.
• General methodological breadth beyond this bundle → consult the natural-science routing slugs only if scope truly leaves engineering.

Output format

[Fit] High / Medium / Low (one-line reason)
[Target] Transportation Research Part B (Methodological)
[Topic tags] <2–3 closest methodological subtopics>
[Contribution type] new model / formulation / theorem / estimator / algorithm
[Method/evidence] <does it clear the generality + analytical-rigor bar, or is it an application?>
[Top risk] <the single most likely reason for rejection>
[Part check] B vs. A vs. C vs. E
[Official items to re-check] <article type / length / data-code / disclosures>
[Re-route suggestion] <if not a fit, a better-matched venue>