Trucks

An essay is a piece of writing on a subject. An assay is when you do an analysis on ore to determine its metal content. (The percentage of gold, etc.)

If you are a truck driver, I think you shouldn't base your decisions only on your gps GPS navigator, specially inside the little towns.

1/ You can't say "I think shouldn't"; you need to specify who or what shouldn't. 2/ Truck drivers make many decisions when driving a route; therefore you need it to be plural. 3/ Initialisms like GPS are always capitalised in English. 4/ You would only say the little towns if you were referring to a specific group of them. Here you mean "little towns in general", so yu don't use "the".
If you do that, you could encounter some inconveniences. For example this morning I saw a truck locked in front of a bridge. The truck was moving along the road, it met the bridge over him it ( the road was under the bridge), but it wasn't height low enough to go ahead.

1/ You always say "in front of" in English. 2/ You could say "him" if you meant the truck driver rather than the truck, but you had already used "it" to refer to the truck. It's best to be consistent. ("Him" is sometimes used to refer to the combination of the truck and the driver; for example "He pulled out into traffic." Obviously the driver didn't pull out alone, but did so in the car.) 3/ Similarly I think that in the latter part of the sentence you were using "it" to refer to the bridge rather than the truck. However swapping points of view like that (from the truck's point of view to the bridge's) is potentially confusing, so I re-expressed this as "it (the truck) wasn't LOW enough to go through. By the way, the bridge was not high enough, rather than height enough. High is an adjective, while height is a noun.

This event made a lot of matters to created a lot of problems for the traffic and to the truck driver.

You would never use "matters" like that; it's far too general and imprecise. Also I can't think of an example of "making matters". What it caused were problems, or even more specifically, delays. You could also say "inconvenience".