What might be a result of failing to monitor traffic signal performance effectively?

Failing to monitor traffic signal performance effectively can lead to reduced efficiency in traffic flow and an increased potential for accidents. Traffic signals are designed to manage the flow of vehicles and pedestrians safely and efficiently. If performance is not monitored, issues such as timing malfunctions, improper signal phasing, or equipment failures can go unnoticed. This can result in traffic congestion, longer wait times, and confused drivers, all of which can create hazardous conditions.

Inadequate monitoring could also mean that signals are not adjusted to cope with changing traffic patterns or volumes, exacerbating delays and the likelihood of accidents. For instance, if a signal is not timing correctly during rush hours, it might lead to gridlock or unsafe crossing conditions for pedestrians. Consequently, the overall safety and efficiency of the intersection are compromised, leading to a higher chance of collisions and injuries.

Other options do not accurately reflect the consequences of poor monitoring; for instance, increased installation costs and higher traffic volumes can be the result of other factors and do not directly correlate with monitoring failures in the same way.