A man that goes to work in the middle of the night should be allowed to go unmolested.
Unfortunately, from Brownsville, Texas to San Diego, California, many people going
"to work in the middle of the night" are up to no good. Their "work" involves human smuggling, weapons, stolen vehicles, drugs, etc.
Drivers are occasionally warned about being out at night on certain highways in the southern portions of the above mentioned states.
The LEO that stopped Bob was doing his job. A non-functioning light is probable cause to initiate a traffic stop. When the officer determined Bob was a stand up guy, a simple warning was all that was involved. Not uncommon. A sad fact of today's reality.