 866-90-RED-EYE. Brought to you by Hot Shot Secret. Hi, I'm Jen Loomis, a transport safety expert at J.J. Keller, and I'm here to share a tip on speed and space management. Due to safety concerns, many motor carriers have policies that limit or prohibit the use of cruise control. If your motor carrier does allow you to use cruise control, you should only use it in good driving conditions, during daylight hours, and on roads that have light traffic, few curves or hills, and a consistent speed limit.