# New Taipei City Smart Pavement Management Center and Road Maintenance Analysis
## 4 Pavement System Modular Work Order and Budget Analysis
### Maintenance Methods and Cost Analysis for Dispatch  
The New Taipei City Government's Maintenance Engineering Office has established standards for the seven main types of road damage and their severity levels within the city. This study uses these standards for maintenance and analysis (Tables 3 and 4).  
The standards categorize various forms of road damage and their severity levels, including potholes, alligator cracks, linear cracks, block cracks, heaving and settling, patching and pipeline excavation repairs, and manhole cover alignment. Each type of damage is classified as either low, medium, or high depending on its extent.  
Figure 10: Pavement Repair Dispatch Process.  
* Low damage includes potholes smaller than 10 cm, linear cracks less than 1 cm wide, and manhole height differences between 0.5 and 1 cm. These have a minimal impact on driving.
* Medium damage includes potholes between 10 and 20 cm, alligator cracks with minor fragmentation, cracks wider than 1 cm but no longer than 7.5 cm, and manhole height differences between 1 and 2.5 cm. These cause some discomfort for drivers.
* High damage includes potholes larger than 30 cm, alligator cracks with significant fragmentation, cracks wider than 1 cm and longer than 7.5 cm, cracks with severely damaged edges, and manhole height differences greater than 2.5 cm. These conditions result in extreme discomfort for drivers. These classification standards help assess the severity of road damage and provide a basis for subsequent repair activities.  
Figure 11: Road Management Center Information Platform Dispatch Page.  
\begin{table}
\begin{tabular}{c c c c} \hline \hline
**Damage Type/Severity** & **Low** & **Medium** & **High** \\ \hline
**Pothole** & Pothole \textless{} 10 cm & 10 cm \textless{} Pothole \textless{} 20 cm & Pothole \textgreater{} 30 cm \\ \hline
**Alligator Cracking** & Cracking without fragmentation & Cracking with slight fragmentation & Cracking with severe fragmentation \\ \hline
**Linear Cracking** & Crack width \textless{} 1 cm & Crack width \textgreater{} 1 cm, length \textless{} 7.5 cm & Crack width \textgreater{} 1 cm, length \textgreater{} 7.5 cm \\ \hline
**Block Cracking** & Fine crack width, no damage &
\begin{tabular}{c} Crack width is more obvious \\ (0.3–0.5 cm), with some \\ intersecting cracks \\ showing damage \\ \end{tabular} & Noticeable cracks (over 0.5 cm), severe edge damage \\ \hline
**Heaving and Settling** & Slight driving discomfort & Moderate driving discomfort & Severe driving discomfort \\ \hline
**Patch and Pipeline** &
\begin{tabular}{c} Patch with cracks or slight \\ **Excavation Repair** \\ \end{tabular} & Patch in good condition & Patch with cracks or slight discomfort for drivers & Patch with cracks or significant height differences, very uncomfortable \\ \hline
**Manhole Cover Alignment** & \begin{tabular}{c} Manhole height difference \\ 0.5–1 cm \\ \end{tabular} & \
\begin{tabular}{c} Manhole height difference \\ 1–2.5 cm \\ \end{tabular} &
\begin{tabular}{c} Manhole height \\ difference \textgreater{} 2.5 cm \\ \end{tabular} \\ \hline \hline \end{tabular}
\end{table}
Table 3: Seven Types of Damage by the New Taipei City Government Maintenance Engineering Office.  
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Building on the previously mentioned types of road damage and severity, the New Taipei City Government Maintenance Engineering Department has also established corresponding repair plans for the seven major types of road damage. This study uses these plans as a basis for cost analysis of different repair options.  
Repair options for various types of damage of differing severity are categorized into low, medium, and high treatment methods:  
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