But Mr. Shein said changing hospital cellphone regulations on the basis of these findings might be premature.
Granted, it would be nice if all drivers tossed aside their cellphones, as regulations require, and concentrated fully on the road.
The association opens its annual trade show today in Atlanta, and the central debate will be how the industry can prevent the government from increasing its regulation of cellphone services.
At the same time, Mr. Farley, a Democrat, said there were powerful politicians in Arizona and elsewhere who did not want to see any regulation of cellphone use by drivers — whether texting or talking.
An article on Wednesday about proposed federal regulations to prohibit cellphone use by commercial drivers described incorrectly the phones that were the focus of safety studies that produced contradictory results.
As the conversation turned to regulation and China, the cellphone of an older, pinstripe-suited Global Conference attendee sitting beside DealBook rang.
In separate statements, TV Azteca, the Elektra retail chain and the cellphone company Iusacell said that excessive regulation had considerably increased expenses and legal risks.
(The F.C.C. maintains no regulations against cellphone-blocking techniques other than jamming, but does not rule out the possibility that such techniques could be scrutinized in the future).
An article in Business Day on Nov. 26 about the safety of hands-free devices for drivers referred incorrectly to regulations on cellphones in Florida.
