A forum for owners of Yamaha TTR250 trail and enduro bikes!

texasT wrote:

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Terry,
I'm guessing the sign "DRY WEATHER ROAD AHEAD", wasn't talking to you, as you say it was raining the whole time.
I work for the Highway Dept. here and pretty sure that sign don't exist here in the desert

 

greg

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 Lol Greg, I think it's that different language trickery again :)

A dirt road is an unpaved road made from the native material of the land surface through which it passes, known to highway engineers as subgrade material. Dirt roads are suitable for vehicles; a narrower path for pedestrians, animals, and possibly small vehicles would be called a dirt track—the distinction is not well-defined. Unpaved roads with a harder surface made by the addition of material such as gravel and aggregate (stones), might be referred to as dirt roads in common usage but are distinguished as improved roads by highway engineers. (Improved unpaved roads include gravel roads, laterite roads, murram roads and macadamized roads).

Compared to a gravel road, a dirt road is not usually graded regularly to produce an enhanced camber to encourage rainwater to drain off the road, and drainage ditches at the sides may be absent. They are unlikely to have embankments through low-lying areas. This leads to greater waterlogging and erosion, and after heavy rain the road may be impassable even to off-road vehicles. For this reason, in some countries, such as Australia and New Zealand, they are known as dry-weather roads.

Jarrah