There are lots of neurotransmitters, and synapses that use dopamine and serotonin are actually pretty rare in the brain. This is compounded by the fact that there is a wide variety of receptor proteins for each neurotransmitter. The same neurotransmitter binding to different receptors can result in different things.
States where radar detectors are banned. According to the National Conference of State Legislatures, radar detectors are banned in all vehicles in the state of Virginia and the District of Columbia, Washington D.C. Radar Detectors are also banned in big trucks in the states of New York and Illinois.
In many states, there are no laws that specifically prohibit the use of radar detectors. But even when the law does not have a specific prohibition, you may want to consult with an attorney to learn all the possible exceptions and conditions for legally having a radar detector in your car.