Traffic congestion can have a significant impact on productivity in a city. To calculate the productive hours lost due to traffic congestion each year, we need to consider several factors such as the total number of commuters, average commute time, and the economic output of the city. Firstly, we need to determine the total number of commuters in the city. This can be done by compiling data from sources such as the census or transportation authority. The number of commuters will give us an idea of the total number of people affected by traffic congestion. Next, we need to find the average commute time for each commuter. This can be calculated by collecting data from surveys or transportation authorities. Once we have the average commute time, we can multiply it by the number of commuters to get the total hours lost due to traffic congestion each day. Finally, we need to calculate the economic output of the city. This can be done by considering factors such as the GDP, average salary, and the number of businesses in the city. By knowing the economic output of the city, we can estimate how much productivity is lost due to traffic congestion. Using this information, we can estimate the total productive hours lost due to traffic congestion each year in the city. This information can be useful for policymakers, transportation authorities, and businesses in developing strategies to improve transportation infrastructure and reduce traffic congestion.