This blog is written by author Sachiko who is not a native speaker of English, so it may be hard to read. It is translated from the summary of Japanese page; http://akitaodatelifejp.hatenablog.com/

Driving heavy truck uphill on 3rd gear

When I drive the concrete mixer truck on 2nd gear, it could not go up the steep slope of snowy road.

My senior taught me to change the gear to 3rd and then it could climb the hill.

I learned in some cases low gears can not move the truck up the hill because of its power of resistance to snow.

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This photograph is taken in safty with the permission of my company.