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National Highway 48 or NH 48 is a National Highway of India running entirely within the state of Karnataka.It is renumbered as NH-75 now. It links the Port city of Mangalore with the state capital Bangalore, two major cities of Karnataka state. NH 48 passes through towns of Nelamangala, Kunigal, Channarayapatna, Hassan, Sakleshpura, Uppinaangadi and reaches Mangalore. It climbs the Western ghats through the Shiradi range. Total length of this highway is .〔(【引用サイトリンク】 National Highways Starting and Terminal Stations )〕 The highway is known as B.M. (Bangalore- Mangalore) Road and B.H. (Bangalore - Hassan) Road in some stretches where it traverses. The traffic on this highway has increased after 1990 mainly due to the setting up of MRPL at Katipalla, Mangalore. This highway for movement of goods to and from New Mangalore Port. The government undertaking KSRTC runs several buses day and night in between these two cities along with private operators.The trucks and trailers carrying LPG and other petroleum products from MRPL to Bangalore have been frequent cause of accidents in this road. Also the condition of this national highway gets worse during monsoon ( rainy ) season especially in ghat section. Travellers avoid this route and take either Bangalore-Mysore-Kushalnagara-Mangalore or Charmadi route during rains from month of June to October, even if it takes longer time. The road traverses through ghats till Sakleshpura from Mangalooru and then it is Bayaluseemae region up to Bengaluru, where the road is much straighter. One can see coconut and arecanut plantations, coffee estates, dense forests of western ghats and paddy fields. This national highway 48 offers scenic view of western ghats (Sahayadri) of India during the monsoon season. The NH 48 starts at Mahaveer circle at Kankanady in Mangalore which is junction of NH 17 and road coming from Mangalore city and joins the NH 4 near Nelamangala, which is approximately north from heart of Bangalore city. Indian railway has resumed train services between Mangaluru and Bengaluru after conversion of railway track gauges from metre gauge to broad gauge under Project Unigauge. This railway follows Bantwal- Kaniyoor- Subramanya road- Yedakumeri- Sakleshapura route. Many people prefer train journey in this route, as its less stressful even though it takes longer time. National Highway 48 is getting widened and upgraded to the 60-meters wide, 4-lane highway. Mangalore - B.C Road(45-meter wide) and Hassan - Nelamangala(60-meter wide) section has been upgraded to 4-lane highway. Final pending stretch of Hassan to B.C Road has been notified and land acquisition is in progress. Forest area including ghat section will not be part of the widening exercise as forest department has not given permission to acquire the land for widening. The stretch passing through the Western Ghat is a major nightmare in this highway. After every monsoon PWD department repairs the stretch of the national highway going through the Western Ghat. The road most of the time of the year is filled with potholes and the problem of the pothole ridden stretch does not seem to be getting solved as large and heavy trucks pass through this stretch on their way to the seaport at Mangalore.〔http://www.thehindu.com/news/national/karnataka/travelling-on-shiradi-ghat-stretch-is-a-nightmare/article4941892.ece〕 The Shiradi ghat section is the dreaded section in this highway, which has resulted in taxi drivers asking for extra money to travel in the NH-48.〔http://www.thehindu.com/news/national/karnataka/imagine-crossing-35-km-in-two-hours/article5008030.ece〕 There was a proposal put forward by Japanese consultants to dig the tunnel through the Shiradi ghat which could have brought down the travel time in ghat section from 3 hours to 30 mins, but as of Jan 2013 the proposal was stalled as environmental clearance was not provided.〔http://www.livemint.com/Politics/1LBsfxncSCCJN8mv3s3IQJ/Japan-agency-seeks-to-build-Rs-4800-crore-tunnel-in-Western.html〕〔http://www.mangalorean.com/news.php?newstype=local&newsid=369867〕 In July 2013, the Union Ministry of Surface Transport approved the construction of the tunnel using a Japanese company.〔http://timesofindia.indiatimes.com/city/mangalore/Government-mulls-tunnel-through-Shiradi-Ghat/articleshow/20639422.cms〕 18.5 km multi-stage tunnel from Gundya in Dakshin Kannada and Saklespur in Hassan District will include 5 tunnels and 4 overbridges including a 2 km arch bridge and will cost INR4,800 crore (INR 48billion or US$850million) with offers from private players to undertake this project on PPP (Public Private Partnership basis) without capital investment from the government.〔http://www.mangalorean.com/news.php?newstype=local&newsid=369867〕 Tunnel will provide a straight road in place of the road with multiple hairpin bends, thereby saving travel time for vehicle users and an all-weather road which is not exposed to the high rains.〔http://www.thehindu.com/news/cities/Mangalore/decision-on-shiradi-ghat-tunnel-soon/article4948060.ece〕 Minister of Road Transport & Highways, Government of India, Mr. Oscar Fernandes, has supported a tunnel through Western Ghat to which will reduce travel distance between Mangalore and other parts of Karnataka, reduce the travel time, will result in accident rate reduction, fuel savings, reduction in vehicle maintenance costs.〔http://www.thehindubusinessline.com/industry-and-economy/logistics/a-new-road-for-the-highways-minister/article4917433.ece?ref=wl_industry-and-economy〕 This highway is expected lose importance as Ministry of Road Transport & Highways, Government of India has proposed a Greenfield (i.e., new and parallel) access controlled Expressway Corridor connecting Chennai and Mangalore.〔http://timesofindia.indiatimes.com/city/mangalore/Greenfield-express-corridor-from-Mangalore-to-Chennai-on-the-anvil/articleshow/20768502.cms〕 This highway-expressway combination can be compared to Mumbai-Pune Highway-Expressway combination. Two-wheeler, three-wheeler and local traffic will use the 4-lane highway (without access control and designed for slower traffic), where as truck, bus and four-wheeler will zoom at the maximum speed on the access-controlled 3D Right of Way designed 6/8-lane expressway (3D right of way concept means adding the space (height) element to the usual length and breadth dimensions involved in road construction). == See also == * List of National Highways in India (by Highway Number) * National Highways Development Project 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「National Highway 48 (India)(old numbering)」の詳細全文を読む スポンサード リンク
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