A feedback loop for exchange of information with society is essential. Uncertainty must be managed . There will always be unknowns. Future demographics and social conditions are impossible to predetermine, so we need to develop approaches that aim for a strategic position in anticipation of changes, not unlike chess. Professionals need to be trained across disciplines.
Negotiation is critical between the actors working towards a solution.
Not every party is going to get everything it wants. Compromise is essential. Dr. Arnold Howitt presented an overview of US transportation and land use policies aimed at reducing mobile-source emissions. The US has been fairly successful in adopting and imposing standards, with emission controls and fuel formulation accounting for most of the US mobile source emission reductions to date. Public support has been strong, empowering elected officials.