To reduce the air resistance/drag acting against them and also to reduce the fuel consumption.
some lorries have deflectors fitted over their cabs, so it becomes more streamline, it can DEFLECT the air resistance too :) The Ugly Rat
like deflectors on lorries
The collective nouns are a convoy of lorries a fleet of lorries.
Car window deflectors are not very expensive. They can cost anywhere from $25 to $50.
The two lorries passed each other.He used to drive lorries for a living.
The word lorries is a common plural noun. It requires no apostrophe.The lorries lined up next to the curb.If the word lorries has a possession or belonging, it needs an apostrophe.The lorries' tires looked new.
how many eddiestobart lorries arethere
The plural form is lorries. The plural possessive is lorries'.
The word lorries is a plural noun. The singular is lorry.
The headlight deflectors are located in the headlight assembly. They can be difficult to remove and replace, because you have to feel your way around in the beginning.
You can find car window deflectors anywhere in the world but for a decent price you have to search around more. It would have to depend on your location for decent prices.
There are quite a few websites that sell auto wind deflectors online. Here are a few: bizrate.com, JC Whitney.com, superiorcarcare.net and autopartswarehouse.com.