Question Motor vehicle crashes are most frequently caused by: Answers Poor road conditions. Actions or errors on the part of the driver. Large trucks. Animals on the roadway. Explanation Motor vehicle crashes are most often caused by the actions or errors of a driver. Driving a vehicle comes with the responsibility of keeping yourself and other drivers safe. Pass your DMV Written Test with flying colors Take me to the cheat sheet Vermont This questions appears in the following tests: Vermont Practice Test 7 Vermont Practice Test 2