The Power Dolly Approach to Highway Transportation

The power dolly is a self-contained power unit installed in a converter dolly that is used between trailers in a doubles operation. Its main purpose is to provide additional tractive effort plus additional horsepower for performance to assist in meeting schedules when adverse weather and road conditions prevail. It also has a purpose in providing extra power and traction when heavier loadings are encountered such as in the use of triples or two 40 ft trailers on the throughways.