WASHINGTON -- The Federal Motor Carrier Safety Administration says it has long acknowledged shortcomings in its CSA program, and it plans to continue enforcing elements of the program that have come under criticism.

The agency posted a notice last month in reaction to an analysis of CSA completed by the American Transportation Research Institute.

The institute found that while some CSA scores are accurate predictors of crash risk, others work in the opposite direction. (See Nov. 1 Bus & Motorcoach News.)

The American Transportation Research Institute analysis found a strong correlation between score and risk in three Behavior Analysis Safety Improvement Categories: Unsafe Driving, Fatigued Driving and Vehicle Maintenance.

But there was a negative relationship between score and risk in the Driver Fitness and Controlled Substances and Alcohol BASICs, the report says.

In its statement, the FMCSA said the institute's study confirmed what has long been understood: that exceeding the score threshold in Driver Fitness does not in and of itself indicate high crash risk.

But the agency said it has data showing that 75 percent of carriers above the threshold in that category also are above the threshold in at least one other category.

"FMCSA will continue to address motor carriers with patterns of noncompliance in the Driver Fitness BASIC and, in doing so, will hold carriers accountable for drivers being properly licensed and meeting medical qualification standards," the agency said.

The agency said its response was based on a preliminary review of the American Transportation Research Institute study, and it planned to conduct an in-depth review.

"(FMCSA) will carefully consider this information as we work to make well-informed decisions about how to further strengthen the CSA program to better identify unsafe carriers and address safety problems before crashes occur," the agency said.