Why can’t cameras be installed along the freeway to monitor carpool lanes?

Q: Theodore Petrich of Hemet bemoaned all the solo drivers who ignore the law by entering and using freeway carpool lanes. Petrich asked why the state Legislature can’t install cameras on freeway on-ramps and freeways to monitor the carpool lanes and enforce the multiple-occupant rules.
A: We think this is a good question to direct to the Legislature, but we suspect cost and technical challenges are among the reasons that cameras are not used on California freeways for law enforcement purp