Please use this identifier to cite or link to this item:
|Title:||Optimal subwork zone length and project start time for short-term daytime work zones from the contractor's perspective|
|Authors:||Meng, Q. |
|Keywords:||Non-differentiable optimization model|
|Source:||Meng, Q., Weng, J. (2013-04). Optimal subwork zone length and project start time for short-term daytime work zones from the contractor's perspective. Transportation Research Part C: Emerging Technologies 29 : 72-83. ScholarBank@NUS Repository. https://doi.org/10.1016/j.trc.2013.01.001|
|Abstract:||To mitigate the negative traffic impact caused by work zones, land transport authorities usually impose constraints on queue length and travel delay. In reality, a single or multiple subwork zone strategy can be adopted to mitigate queue length and travel delay. However, contractors conducting work projects are only concerned with the minimization of the total maintenance cost. From the contractor's standpoint, this study proposes a total maintenance cost minimization model to determine the optimal subwork zone length and project start time, subject to queue length and travel delay constraints. Using average hourly traffic (AHT) data, this study shows that total user delay is non-differentiable with respect to the subwork zone length and project start time. This interesting finding demonstrates that previous analytic expressions of the optimal subwork zone length cannot hold for AHT data. To solve the proposed model, an enumeration method is designed. Finally, a numerical example created from the roadside tree trimming in Singapore is used to assess the model and solution method proposed in this study. © 2013 Elsevier Ltd.|
|Source Title:||Transportation Research Part C: Emerging Technologies|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Feb 21, 2018
WEB OF SCIENCETM
checked on Jan 16, 2018
checked on Feb 18, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.