There are many national highways that are located in the United States. A few of the highways are I 95, I 75, I 80, and I 24.
As per the record provided by the National Highways Authority of India, the total number of National Highways is 288.The last national highway is 235 which is 66 km in Uttar Pradesh.
The two types of road are national highways and state highways. National highways go anywhere and are owned and maintained by the government of the country (such as the Interstate in the USA). State highways are roads contained within a single state. The state government is responsible for maintenance of these roads.
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State highways are maintained and managed by state governments, while national highways are maintained and managed by the central government. National highways typically connect major cities and serve as part of the national transportation network, whereas state highways connect cities and towns within a specific state.
The Federal Government funded 90% of the National System of Interstate Defense Highways.
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Government maintains it
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National Highways Authority
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The conditions of the highways in California are very good, due to increased regulation on traffic on local and national highways in California, which was recently implemented.
Currently, there are 216 National Highways in India, numbered between 1 and 235, with several numbers skipped.