Ben Brooks on how to improve air travel:

My idea: enforce the size limits for carry-ons strictly.

After traveling on a plane recently, I couldn’t me more for this. Now that everyone has some sort of checked-bag fees, 80% of people seem to carry on some sort of rolling bag, plus another bag of some sort. Two things I have noticed, 1) these bags are usually larger than the regulations allow, 2) the 2nd bag is usually too big to fit under the seat. So not only are people putting large bags in the overhead, but they are putting two of them up there.

The worst of all of this is that, as Brooks mentions, these are the people that slow down de-boarding because it takes them time to get their bags down. In a quest to create more revenue, airlines charge checked bag fees, but to avoid these fees more people carry on luggage. The irony is that the airlines then chose not to enforce regulations around carry-on sizes, therefore missing out on revenue.