In order to effectively decrease the dust pollution which caused by cars, and to continue the policies from year to year, the Bureau of Environmental Protection in Tainan county has carried out the project which enhances road flushing during 2009 --- personal road flushing business. The project began on Sept 10, 2009 and ended on Sept 9, 2010, lasting for one year. The progress of project are as shown in Table 1. The abstract of achievements is as follows. 1. The complete length of road flushing of the project is 8,174.6 kilometers which exceeds the goal of 8,000 kilometers demanded by contract, and the total execution rate is 102.2 %； the execution length of road sweeping is 13,332.9 kilometers which exceeds the goal of 13,000 kilometers demanded by contract, and the execution rate is 102.6 %. Each assignment was completed smoothly. 2. The complete length of road flushing of the project is 8,174.6 kilometers, and total use of water is 9,564.67 tons; the use of water is 1.05 - 1.27 tons one kilometer per month, and use of water averages 1.17 tons one kilometer. It exceeds the contract's standards. 3. The complete dust gathering amount of road sweeping is 284.94 tons. The dust gathering amount is 15.24 – 36.15 kilograms a kilometer per month and the average of dust gathering amount is 21.37 kg/km. It is estimated that dust removal amount of street flushing is 181.48 tons and road sweeping by manual labor is 14.02 tons; total removal amount is 480.44 tons. It shows that the plan can scavenge the dust on the road with telling effect, and the dust pollution which caused by automobiles can be controlled. 4. Now the total length of street flushing is 8,174.6 kilometers; the reduction amount of TSP is estimated to be 112.8 tons. And the amount is 184.0 kilograms as the result of 13,332.9 kilometers street sweeping. So the total amount is 296.8 tons because of street flushing and sweeping project. 5. According to the investigation of degree of pollution, began on September 2009 and ended on September 2010, A level road accounts for 515.80 kilometers of totality (52.8%), and B level 406.40 kilometers (41.6%), C level 55.56 kilometers (5.7%). 6. In respect to managing street dust, according to monthly statistics for this county, the average ratio value of general soil is 10.79 %；at the present stage the project's street sweeping area is 13.33 square kilometers, the weight of the accumulated swept dust is 284,940 square kilograms, and the planned unit per area dust load is 21.38 grams per square meter. This results in a predicted increase to C-level pollution sweeping frequency. In 2009 the county bureau of environmental protection randomly inspected five roads, the street dust loading is 2.88-11.96 g/m3. Three roads are A-level, one is B-level, and one is C-level; and inspected ten roads very month. The total length is 55.4 kilometers, 4 roads are A-level, 6 are B-level and C-level is none. 7. The total statistics for this year acknowledges the maintainance of 49,692.4 kilometers of roads which exceeds the goal of 10,000 kilometers demanded by contract (exceeding by a rate of 496.9 %) indicating that this project has incited commitment and effort to this work. Concurrently, according to the Bureau of Environmental Protection, united sharply reduced formula calculations, estimates TSP sharply reduced volume to be approximately 685.8 tons. 8. This project therefore implements a multitude of robust restraining measures：1. To urgently begin implementing measures dealing with the worsening of air quality；2. To establish coordinated reports and measures that examine and deal with the sources which pollute dirty roads；3. Policies restraining the pollution of farming and irrigation canals；4. Measures to educate the public how to assist Bureau procedure；5. Restrictive ；6. The maintainance and upkeep of flushers & equipment；7. Guide the appropriate enterprises in designing roads that take proper care of public signs 8. Measures which assist in dirty and messy places and build cases；9. To announce sanitary measures in accord with the Bureau of Environmental Protection, which rapidly disperse the sources of air polluting matter. Such emissions are to be restrained and reduced. 10. Pollution sweeping measures which assist large scale activities within the county's nearby road sanitation and public villages.

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