39 years P&D no a/c and I'm still cooking. When I was too hot, stopped at customer who had a/c to cool off. I agree road tractors should be operational or park them.With all due respect, give me a break. How many decades did drivers drive OTR and P/D without A/C in all kinds of heat. Let's not get ridiculous with this. An occasional run without A/C isn't going to destroy anybody. Spare me the drama.