Before reading the documentation of dbstop, I'd say read the getting started tutorial of matlab or any introductory book. I have no idea where the syntax for the line
onTime = noTraffic(true), gasEmpty(false);
came from. Certainly not from any matlab introductory course. The above does not check "if noTraffic is true", it does not check if "gasEmpty is false", and it certainly does not "and" any condition.
The above assigns the first element (since true is the same as 1) of noTraffic to onTime. The comma is equivalent to a line return, it just starts a new statement. That new statement accesses the 0th element of gasEmpty (since false is the same as 0). This will always error since matrix indexing starts at 1 in matlab. Even if did not error, nothing more would be done with that element, it would not be assigned to anything.
