Replacing the Mobile Van: ROI Analysis of In-House Audiometric Testing

The Traditional Mobile Van Model

For decades, most companies have outsourced their annual audiometric testing to mobile van services. A van arrives once or twice per year, sets up in the parking lot, and tests as many employees as possible over one to three days. This was practical when the only alternative was building a permanent sound booth. The costs it carries, though, are operational and they are rarely put on paper.

The typical van program costs $45-75 per test before you count scheduling coordination, lost shift time, and the overhead of funneling hundreds of employees through a narrow testing window. For a 500-employee facility, that is two to three days of disrupted production and $22,000-37,000 in direct testing costs. That figure comes before missed employees, overtime, and rescheduling are added back in.

Underneath the line items are three separate failures, and they are usually blurred into one vague complaint about vans. They are not the same problem. The van imposes a date you did not choose. The day itself disrupts the floor. And the visit leaves a chunk of your workforce untested. The sections below take them one at a time.

Failure One: The Van Picks the Date, Not You

Date Imposition

The mobile van model is sold as flexibility. In practice it is the opposite. The vendor's route determines your testing date, and you build your operation around it. Production planning, shift coverage, and overtime all bend to a calendar a third party hands you, often months in advance and rarely on the day that works for your floor.

When the date is fixed and the workforce is not, coordination becomes the job. Someone has to reconcile multiple shifts, line up coverage, and chase the people the schedule does not naturally reach.

Failure Two: Van Throughput Is the Ceiling

Day-of Disruption

The binding constraint on van day is not employee availability. It is throughput. A van has a finite number of booths and a finite number of hours before it leaves for the next stop. Whatever does not fit through that line is pushed into makeup testing, no matter how available your people are.

Makeup testing is not a one-time inconvenience. It is a recurring annual failure built into the model. Every cycle, the same gap reopens: the people the booth could not reach become a months-long chase across offsite clinics, and that chase restarts the next time the van comes around.

Failure Three: The 20% That Never Gets Tested

Incomplete Coverage

The first two failures compound into the one that shows up in an audit. Between the dates you cannot move and the throughput you cannot exceed, a fifth of a noise-exposed workforce routinely falls outside the van program entirely. These are not late records. They are missing records.

Every untested employee is a hole in your hearing conservation program and a standing OSHA audit liability. This is a compliance gap, not a scheduling problem. An auditor does not ask why someone missed the van. They ask for the audiogram, and there is not one.

The In-House Alternative

Soundtrace's in-house model replaces the annual van event with year-round testing capability. Using the Invisible Booth™ technology, trained on-site personnel conduct OSHA-compliant audiometric tests in 6-8 minutes, on any shift, on any day of the year.

That dissolves all three failures at once. There is no imposed date, because every day is a testing day. There is no throughput ceiling, because testing is distributed across the year instead of crammed into one window. And there is no 20 percent gap, because the people the van used to miss get tested during natural downtime: shift changes, onboarding, return from leave, or scheduled health check-ins. Testing becomes part of the operational rhythm instead of an annual event you brace for.

Cost Comparison: Van vs. In-House

For a typical 500-employee facility, the total annual comparison breaks decisively in favor of in-house testing. Van programs run $45-75 per test with added charges for retests, missed employees, and expedited results. All in, that lands at $30,000-50,000 per year.

Soundtrace's all-inclusive model covers unlimited testing, devices, software, audiologist review, training, and support at a fixed per-location cost. Companies typically see 40-60% total cost reductions compared to their previous van-based programs.

Cost savings are only part of the return. The larger value is closing the compliance gap. Companies that switch to year-round in-house testing consistently reach 95-100% compliance, compared to the 75-85% typical of van-based programs. With OSHA citations for inadequate audiometric testing averaging $16,000 or more per violation, every undocumented employee you eliminate has direct financial value.

Case Studies

A 2,200-employee automotive parts manufacturer in the Midwest replaced their mobile van program with Soundtrace in-house testing across four facilities. Within the first year, compliance rose from 78% to 99%, total program cost fell 52%, and the company stopped coordinating across three different van vendors.

A national logistics company with 15 distribution centers had been spending over $400,000 annually on mobile van testing and still averaging only 82% compliance. After deploying Soundtrace at all locations, they reached 97% compliance in year one and cut total annual spend to $185,000.

A heavy equipment manufacturer running multiple shifts found their once-a-year van visit consistently missed 20% of third-shift workers. With in-house testing they reached 100% compliance for the first time in company history and identified four Standard Threshold Shifts that would have gone undetected until the following year.