A review of alignment optimization research for roads, railways and rail transit lines

T Song, P Schonfeld, H Pu - IEEE Transactions on Intelligent …, 2023 - ieeexplore.ieee.org
Roads, railways and rail transit lines play major roles in transporting passengers and freight.
In the design process for such transportation infrastructures, the alignment determination …

Optimization of metro vertical alignment for minimized construction costs and traction energy: A dynamic programming approach

Q Wang, Y Bai, Y Chen, Q Fu, P Schonfeld - Tunnelling and Underground …, 2022 - Elsevier
Vertical alignment significantly affects the construction costs and train traction energy use of
a metro system. Existing studies on this subject mostly optimized the vertical alignment while …

Railway alignment optimization considering lifecycle costs

H Zhang, H Pu, P Schonfeld, T Song… - IEEE Intelligent …, 2021 - ieeexplore.ieee.org
The problem of railway alignment optimization is studied, with particular attention given to
computing lifecycle costs while considering train speed profile optimization and traffic …

Underground metro interstation horizontal-alignment optimization with an augmented rapidly exploring random-tree connect algorithm

D Yang, Q He, S Yi - Journal of Transportation Engineering, Part A …, 2020 - ascelibrary.org
The design of an underground metro alignment in an urban area is complex and
challenging. The metro alignment constantly invades districts with high-density buildings …

Integrating Energy-Efficient Train Control in railway Vertical Alignment Optimization: A novel Mixed-Integer Linear Programming approach

Y Sun, S Ni, D Chen, Q He, S Xu, Y Gao… - … Research Part C …, 2025 - Elsevier
Incorporating train control into the railway design process enables a practical and
comprehensive evaluation of the lifecycle utility of a track profile. This paper proposes a …

Concurrent optimization of subway vertical alignments and station elevations with improved particle swarm optimization algorithm

L Wei, X Qiu, H Pu, P Schonfeld, S Zhen… - IEEE Transactions …, 2022 - ieeexplore.ieee.org
Station elevations and vertical alignment between adjacent stations often influence each
other. Therefore, they should be optimized concurrently. However, existing studies mainly …

Energy-saving design of underground metro vertical alignment with deep reinforcement learning

S Xu, T Gao, D Yang, X Feng, P Schonfeld, H Li… - … and Underground Space …, 2024 - Elsevier
The design of metro vertical alignment greatly affects train traction energy consumption. This
study develops a deep reinforcement learning (DRL) algorithm for an energy-saving design …

Energy-efficient rail transit vertical alignment optimization: Gaussian pseudospectral method

D Li, X Dong, J Cao, S Zhang, L Yang - Journal of Transportation …, 2022 - ascelibrary.org
Energy efficiency is an important research topic in rail transit operations. Energy-efficient
vertical alignment is a practical consideration during the line design process. Proper vertical …

[책][B] Artificial intelligence in highway location and alignment optimization: Applications of genetic algorithms in searching, evaluating, and optimizing highway location …

MW Kang, P Schonfeld - 2020 - books.google.com
This monograph provides a comprehensive overview of methods for searching, evaluating,
and optimizing highway location and alignments using genetic algorithms (GAs), a powerful …

Modeling System-Wide Urban Rail Transit Energy Consumption: A Case Study of Boston

Z Han, E Gonzales, E Christofa… - Transportation Research …, 2022 - journals.sagepub.com
Rapid transit systems are critical components of urban public transportation networks in their
impact, not only on personal mobility but also on the energy and environmental costs …