Some people make a separate argument about the red light cameras. They say it just changes the type of crash that's most likely to occur at an intersection.

I don't see traffic fines as a substitute for a commuter tax.

I don't believe any sort of traveler does a better job than any other sort of traveler at obeying traffic safety laws. It's difficult to foresee a camera program that can be used with bikers and walkers.

I don't know of any source for online maps showing the platform, stairs, escalators, elevators, mezzanines and other station details.

Automate the headlights so drivers can't forget to turn them on in low visibility.

If you think your job requires you to endanger people, get another job.

Nobody likes paying tolls. It's difficult to explain the concept of dynamic tolling, where the price varies to maintain the flow of traffic. And it's difficult to explain why highway widenings don't wind up helping commuters in the long run.