Social Hazards:
Inconsistency
Risk: People become used to the traffic patterns on their most common routes, so dynamic traffic patterns may be difficult for people to get used to.
Solution: Public service announcements and outreach programs to improve public opinion and awareness about the increased efficiency of the new systems.
Environmental Impact
Risk: More hardware is required, meaning that there is higher risk of damage to the surrounding environment.
Solution: Implement in higher-traffic areas, where the system is needed more and where any additional environment impact compared to a traditional intersection is negligible.
Vandalism
Risk: Public knowledge of more advanced/expensive traffic systems may make vandals more inclined to cause damage to disrupt intersections.
Solution: Implement damage detection systems and a backup traffic cycle to operate intersection in the case that the system is damaged.
Longer Maintenance Downtime
Risk: Maintenance to the system would require longer timeframe and larger maintenance area closed off to work on system, leading to larger detours and greater downtime.
Solution: Optimize the maintenance process and make maintenance tasks as efficient as possible. Try to work on parts of the system individually to close off as little of the system as possible.