Measuring distances by travel time. Travel Tips

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Measuring distances by travel time

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Distances can be measured and time spent walking or driving. To do this, you need to note the number of hours or minutes required to cover or drive a known distance.

A person walks as many kilometers in an hour as he takes steps in 3 seconds (with a step length of 0,83 m).

A person and a horse walk at a pace of about 5-6 km / h; trotting horse runs 12-15 km / h.

The passability of the area is determined by the relief, soil and vegetation cover, hydrographic network, communication routes, as well as the season and weather conditions.

Along the railroad tracks, oblique boards with fractional inscriptions are often found. These are slope indicators that show the size of the slope as a numerator of a fraction (for example, 0,003 or 0,005 indicates that the path rises (if up) or falls (if down) by 3 or 5 mm for every 1000 mm), and the denominator - the length of the slope (150 or 200 - the slope goes for 150 or 200 m). By reading fractions, you can easily calculate the distance traveled and calculate the difference in heights of two adjacent points on the path. For these values, the height difference is 0,003x150=0,45 m and 0,005x200=1 m.

Following along the railway track and taking into account the signs of the slope indicator, it is possible to navigate not only in the distance traveled, but also to calculate to what height the pedestrian has climbed or descended in total on the ground.

The slope of the terrain underfoot begins to be felt when it exceeds 2°.5'.

Author: A.E. Menchukov

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