What are the two ways to know when to shift? CDL What are the two ways to know when to shift?1. Use Engine Speed (RPM)2. Use Road Speed (MPH) Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+
If the answers is incorrect or not given, you can answer the above question in the comment box. If the answers is incorrect or not given, you can answer the above question in the comment box.