Last Updated on 01/22/2023 by Sophia

An engineer has proposed four countermeasures to be implemented to reduce the high crash rate at an intersection. CMFs for these countermeasures are 025, 0.30, 0.17, and 0.28. The number of crashes occurring at the intersection during the past three years were 28. 30. and 31. and the AADTs during those years were 8450. 9150. and 9850. respectively. Determine the expected reductions in number of crashes during the first three years after the implementation of the countermeasures if the AADT during the first year of implementation is 10,850 and the estimated traffic growth rate is 4 percent per annum after implementation.