With all today's technology this honking system is the best way you can come up with.What does it cost per square yard to mill a road ?Two horns mean stop, one means start moving. Cool.Just got a job with the milling company sounds like easy money.Glad we do it a little differently here in Vegas! These guys don’t know how to load a truck!Buy them a ice tea or something they deserve alot of credit your service and time and efforts are deeply appreciated thanks don't work to hard appreciate you guys job well done you should be proud !