This is a question that we have heard over the years from companies that require a Commercial Drivers License (CDL) for employees in certain job titles – whether they are bus/transport vehicle drivers or public works employees. For many positions that involve driving certain classes of vehicles, the state or federal government require a driver to have a CDL. One component of obtaining and maintaining a CDL is undergoing a DOT medical examination with a DOT certified provider.

The main purpose of a DOT medical examination as part of obtaining/maintaining a CDL is to ensure that a driver is medically safe to operate the vehicles within the classification of their license.  Priority areas of a DOT medical exam include assessments of vision, hearing, blood pressure, cardiovascular health history, metabolic health history (ex. diabetes), and an overall physical assessment. An assessment of the upper and lower extremities checks for muscle weakness or loss of limbs. While range of motion is addressed in a DOT medical examination, it is to determine whether the examinee has any potential range of motion issues that the DOT examiner may feel are detrimental to their ability to operate trucks and passenger buses.  While an employer may be sending a driver for an exam, the examiner is not evaluating based on specific job demands.

The DOT medical examination does not address specific range of motion issues related to ingress/egress for specific types of vehicles (how high is the first step and the grab handles), the range of motion required to operate controls on specific vehicles, or the strength and range of motion related requirements to perform employer specific tasks (loading/unloading products/materials, securing items, operating controls, moving hoses, pulling down ladders, etc.).  A job specific post-offer physical pre-employment evaluation (or depending upon the situation, Return To Work FCE or Fit For Duty FCE) can address the examinee’s ability to perform the essential minimum postural and physical demands of the position. Employers should have a customized job description that includes objective measurements of the essential minimum physical and postural demands of the job title. These measurements should be collected using the vehicles, equipment, and other items that are used by the employer and employees when performing their job.

Obtaining a DOT medical certification does not necessarily mean that a driver can meet the essential postural and physical demands of a customized job description.  Conversely, meeting the essential postural and physical demands of a customized job description does not mean that a driver will be able to successfully pass a DOT medical examination (a variety of medical conditions are automatic exclusions in DOT medical examinations or require physician approved waivers).

NJ Ergonomics can assist with the documentation of objective measurement of physical and postural demands of job tasks as well as generation of Post-Offer Pre-Employment physical abilities testing protocols that are based on the essential demands of a job title.