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Roads of Taipei City smoothed even more, every year they are ranked number one in the nation

The Taipei City Government (TCG) has been demanding quality urban roads and continuing to advance its maintenance technology. In the "Urban road care and maintenance management and pedestrian environment barrier-free assessment" done by the Ministry of Interior, the TCG has been ranked the first among the six municipalities in terms of policy and practice for 5 consecutive years. In 2018, it won the special honor of being the only city "free from assessment," as well as being the national model. TCG is confident it will improve the quality of city roads even further based on several planned enhancements.

Regarding poor road flatness after excavation and flushness with manhole covers, the Public Works Department (PWD) of the TCG has set up the Taipei City road and duct information center to tackle these issues with 9 innovative source management measures, including the duct unit's shared offices and immediate coordination, 24x7 duct issue handling and tracking, keeping track of construction process progress and quality using image monitoring throughout, providing citizens with instant information on construction status, reporting incidents with a smartphone app for instant handling and tracking, coordinating and aligning excavation works to minimize their damage to roads, promoting joint channels for cable sharing, getting duct coordinates to improve drawing information quality, and setting up 3D duct standard to build up Taipei City into a safe and high-quality city based on the 5 service targets of "focusing on safety,” "creating harmony ,” "improving quality,” "comprehensive drawing information,” and "data availability."

It is also implementing new design concept to extend road service life and provide a better traffic environment according to road use characteristics, nonconventional asphalt concrete pavement materials, or more cost effective maintenance methods.

The New Construction Office (NCO) test flatness of roads after construction based on the construction specifications by the PCC of the Executive Yuan. It mandates that the single point height difference between the new and old roads must be less than 6mm, and the standard deviation of ordinary roads must be less than or equal to 2.6mm, and the standard deviation of express roads must be less than or equal to 2.4mm when measured with 3m straight gauge and high and low flatness tester. In addition to post-construction inspection, the NCO is executing IRI surveys on road flatness to learn about road stretches with high indexes to collect data for statistics and analysis as well as improvement solution proposals to identify earlier signs of road faults and take preventative measures in advance. The IRI index assessment is undergoing a feasibility study for testing acceptance standards for a schedule for road surface milling renewal in the years to come, which will reduce repeated road surface repair and ensure road service life. 

The TCG is planning to transfer 8m or narrower roads' maintenance and management operation from the district office to the NCO of the PWD from 2016 on to implement Mayor Ke's "one-stop-shop specialty" policy once the 8m or wider roads' smoothing project ends. The NCO submitted the Neighborhood Road Traffic Environment Improvement program over 8m or narrower roads to enable citizens to better enjoy neighborhood roads with "Road update integration systemization,” "Road recovery and maintenance diversification" and "Patrolling, management, and inspection automation" in short, intermediate, and long-term stages.