To communicate with drivers UPS should use the diad. I know in our center, they use the diad to communicate with us. Sometimes they will call on the cell phone, but thats not too often. Know on the other hand how many times do you call you supervisor on they cell?? Do you think UPS pays for there calls, I know my supervisor cell rings all day long. Especially after about 2pm., when they are on car doing S&V's and Safe work methods. With almost 30 yrs in I have no problem if the center calls me on my cell. Sometimes its time sentative and sometime it not. I really don't care when they call. Because I know that I have called them on their cell. Sometimes the new generation of drivers I just wonder?? I know that I have seen changes and some or good and some I wonder about. But I make good money, and will do what is needed for our customers and company. Also, about a month ago our center brought in a state policeman to talk about distracted driving and cell phones where top on this list.