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Wide provided suitable for busy trunk, also can be laid in tunnel and station floor maintenance difficulties, stone or soil subgrade are laid, but the mud pumping in the diseases of roadbed must be laid on the roadbed diseases after renovation. The main advantages of the wide sleeper circuit are: the suborbital sinking is small. The vibration acceleration is smaller than the concrete sleeper line, which gradually slows down and stops after laying. So the line maintenance work is greatly reduced, about a third of the general concrete sleeper line. The track is easy to keep clean. Dirt is not easy to break into the bed and prolong the repair cycle of the route. The line is smooth and stable, which is conducive to high-speed operation and the laying of seamless circuit. The disadvantage is that the cost is higher, and it is more difficult to change the shop on the busy trunk line
Dashboard cameras, also called dash cams, dashcams, car cameras, car DVRs and even accident recorders, are onboard cameras that continuously record the scene through a vehicle's windscreen. They may be coupled to the interior windscreen or to the top from the dashboard, by suction cup or adhesive-tape mount. Dashcams provides video evidence in the case of an accident that happened while travelling. They have become a lot more popular, and there is a huge variety of devices on the market already lately. To do not be the victim of a major accident, you might need a car DVR to record the documentary footage to prove you're innocent. Also, if you believe violations from the rights, you provides the footage for an insurance company or police, for a lawsuit, or at a criminal trial. You might also need to record footage as a matter of course to assist others in case you spot something happening nearby. This could also help improve road conditions insurance firms graphic examples accessible, or monitor the driving habits someone else with their knowledge.
Designed by Shandong High Speed Croup, the construction was entered December 2006 and finished in December 2010, after 14 a lot of planning researches since 1993, which employed 30,000 workers to develop, and used 450,000 plenty of steel and 2.3 million cubic meters of concrete, having a total investment of approximately 9 billion yuan. The open of the bridge will decrease traffic time from Qingdao to Huangdao District by at the very least 20 minutes and release pressure for the Jiaozhou Bay Expressway. Furthermore, the Qingdao Haiwan Bridge is the starting section of national expressway from Qingdao to Lanzhou and the key part of high way net of Shandong.
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