Alertness Testing by BLT

A quick test for alertness? We have that. Let us know what you need for your worksite or group.

That remains true but Bowles-Langley Technology, Inc. has now merged with Predictive Safety, LLC. Together we can offer our customers significant new resources and support. Please check the contacts page for inquiries and support.

Recent News


Fatigue Risks in Constuction

Fatigue is major accident risk factor in construction 29 January 2010 FATIGUE is the number one accident risk factor for construction workers and requires better recognition by occupational health and safety managers, research at the University of Sydney has found. Margaret Chan’s PhD research focused on four high profile oil and gas Sino joint-venture construction […]


Music and Memory

Alzheimer’s Disease has more than its share of treatments that fall under the category of “it can’t hurt” in that they may not help too much but they can’t hurt either. Absent significant evidence to the contrary, I include brain games and exercises in this area. But, something called “music therapy” does seem to help […]



The railroads are starting to worry about some of the new regulations coming down from the Federal Railroad Association (FRA). The regulators are looking to automatic anti-collision systems. These systems are extremely expensive. Forget the fancy computers, just upgrade operator performance with alertness testing. I have a call in to the FRA.


Research Report

Our research report on testing is available as a download on the BLT web site. (Click the “Research Report” above and then select “Research Report” from the list of “BLT Publications”). This report provides background on the development of our software and explains how it was tested. Briefly, we conducted sleep deprivation trials for validity […]


Progress with the Academy

My friend and colleague Dr. Wesson Ashford and others have worked for years get this kind of endorsement (see below) from the medical establishment. So congratulations Wes! “I am pleased to report the American Academy of Neurology has agreed to be listed as a supporter of National Memory Screening Day, per the proposal presented to […]

BLT is a unique company dedicated to providing new solutions for assessing human performance. Our technologies draw on a wide range of management experience and scientific knowledge to provide customers with solutions that are practical, understandable and useful.