A funding source that encourages speed and success

If someone at the Department of Transportation upgrades to smart parking meters and saves the city $100,000 per year on parking enforcement, that cash typically goes into a general budget. Using it for new bike lanes or pothole repair requires legislature approval. 

What would change if instead the department could immediately reallocate those funds? Most companies are set up this way. It's no wonder they have a reputation for moving faster and having more success.