On February 22, 2022, AT&T plans to sunset its 3G network, meaning that modules and devices that request 3G voice and data-only services from the AT&T network will no longer work.

This could have a crippling effect on more than 350,000 Class 8 vehicles and many connected cold-chain trailers, according to ABI Research.

Of the estimated 3.97-million Class 8 trucks in the United States, approximately 3.8-million are employed by smaller fleets. These smaller fleets are more likely to have delayed the transition from 3G to 4G devices, many of which require Federal Motor Carrier Safety Administration compliance via Electronic Logging Devices .

“It is entirely likely that many fleets that have not yet transitioned will be unable to purchase, remove, and replace devices prior to February 22,” said Susan Beardslee, supply chain and Llogistics principal analyst at ABI Research.

“This will result in serious compliance, safety, vehicle health, and operational capability challenges to an industry that moves roughly 72.5% of the nation’s freight by weight, and during a time of rolling, crucial shortages of consumer and business products,” she said.

The transition also has significant ramifications for cross-border trade with Canada and Mexico, as both countries have delayed their 3G sunsets to mid-decade. Should these North American partners enter the U.S. after February 22, the fleets using current AT&T 3G devices will no longer be able to transmit or receive data between drivers and dispatch. This will also include linked devices, such as video telematics.

“Essentially, when the devices no longer function, drivers cannot digitally track their Hours of Service. Considering that driver fatigue tops the list of road dangers, this sunset severely impacts ELD compliance and road safety,” Beardslee said.

“Let’s hope that when an inevitable 4G shutdown occurs in the future, telematics companies and fleets will be better prepared.”