Verizon,the largest US cellular telephone provider,broke with the industry and agreed to support laws that would ban handheld cellphone use while driving.Meanwhile,Chicago is debating whether to ban talking on cellphones while driving.

• 美国最大的行动电话服务商Verizon，已经同意支持禁止开车使用行动电话的立法，而芝加哥议会也正在辩论，是否要立法全面禁止开车讲行动电话。