Read your governing documents to determine the extent of the common areas in your subdivision.
Icy conditions are common on bridges and overpasses.
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Wilderness.
Building roads across natural areas usually produces habitat loss.
Roads, Runways in airports, areas for recreation
deforestation
Asphalt roads are considered to provide the best traction for automobiles in most conditions. Concrete roads will provide better traction in high temperature areas.
Corduroy
The roads helped the missionaries as they made traveling easier, quicker and safer than undeveloped areas.
Pucca roads - roads paved with asphalt - are expensive to construct. They are constructed in areas with a lot of traffic. Many desert roads have little vehicle use so are not worth the expense and effort.
Naturally with such a large country only some, and mostly main roads can be paved. There are many dirt roads in all rural areas, as in every large country.
120 Km/hr on Autobahnen / Autoroutes (Motorways). Sometimes less, where marked. 80 Km/hr on rural roads. 50 Km/hr in urban areas. Often 30 Km/hr on side roads in urban areas.