Related Experiment Video
Updated: Jan 26, 2026

Evaluation of an Exclusive Spur Dike U-Turn Design with Radar-Collected Data and Simulation
Published on: February 1, 2020
Evaluating the sustainable traffic flow operational features of an exclusive spur dike U-turn lane design
Yang Shao1,2, Xueyan Han1, Huan Wu3
1Traffic and Road Engineering Center, Highway Academy, Chang'an University, Xi'an, Shaanxi, China.
Abstract:
The traditional U-turn design has significantly improved traffic operations for relieving traffic congestion. However, the U-turn diversion and merge segments still cause traffic conflicts and delays. In this paper, an exclusive spur dike U-turn lane (ESUL) is proposed with the aim of addressing the disadvantages of the traditional U-turn design. ESUL provides a separate U-turn lane to diverge, decelerate, U-turn, accelerate and merge without interacting with through traffic. The effectiveness of ESUL is demonstrated through a field data investigation, simulation and analysis with VISSIM software. The proposed design is evaluated in terms of three parameters: travel time, delay and number of stops. Compared to the traditional U-turn design, ESUL can reduce travel time by 29.15%, delay by 66.70% and the number of stops by 100% at most. The results showed that ESUL has better performance than the traditional U-turn design and could be implemented to reduce traffic congestion and the potential hazards caused by U-turn maneuvers.
More Related Videos
10:34The Fabrication and Operation of a Continuous Flow, Micro-Electroporation System with Permeabilization Detection
Published on: January 7, 2022
12:43Parallel-plate Flow Chamber and Continuous Flow Circuit to Evaluate Endothelial Progenitor Cells under Laminar Flow Shear Stress
Published on: January 17, 2012
Related Concept Videos
Design Example: Sustainability in Concrete Building
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground...
Sustainable Development
Design Example: Flow Through a Fire Extinguisher
The key to understanding how the...
Introduction to Membrane Traffic
The transport of soluble and membrane proteins is mediated by transport vesicles that collect cargo from one cellular compartment and deliver it to another by fusing with the target organelle membrane. The Rab...
The Pauli Exclusion Principle
Design Example: Flow of Oil Through Circular Pipes