Assume that there are two interesting findings obtained from traffic crash analysis: An experienced driver was likely to induce a severe crash on highways even though there were adequate safety facilities. Majority of severe crashes occurring in the southwest Australia region were single- vehicle crashes rolling down from a hill. Give one (1) potential explanation of each finding. Then, propose one (1) solution for improving road safety based on each finding.

Q: A 11.5-mile section of HYW77 has an ADT of 6300. There were 32 crashes in this section with four…

A:

Q: A highway has a posted speed limit of 50mph and, on one section, has both horizontal and vertical…

A: The posted speed limit = 50 mph The station of PC = 16+00 The superelevation rate = 8% The station…

Q: Determine the predicted average crash frequency,

A: Annual average daily traffic: - It is defined as the annual average vehicle using a specific segment…

Q: Studies were conducted at two sits on rural roads with similar characteristics. The first site was…

A: Crash rates are typically calculated as the number of crashes per million vehicle miles traveled…

Q: Determine the crash modification factor

A: Crash modification factor: - It is defined as a factor which is used to calculate the number of…

Q: A before-and-after speed study was conducted to determine the effectiveness of a series of rumble…

A: To determine whether the rumble strips were effective, we need to compare the average speed before…

Q: A modern roundabout is scheduled to be installed at a location that is currently a traditional 4-leg…

A: 1. By installing roundabout at a location it helps to improve the safety which is based on safety…

Q: A 1.5-mile section of a two-lane road has an AADT of 10,000. In a three-year period, there have been…

A: Fatal accidents = 6Non-fatal accidents = 12AADT = 10,000Road length = 1.5 miles

Q: For a specific rural road segment in northeast Colorado, the total number of crashes as well as the…

A: Standard deviation = 55+5+1003 + 3+8+13+1.3+0.02+0.0333 = 58              Now,…

Q: 4) A spot speed study conducted on Sacramento State campus reported an average speed of 28.51 mph…

A: Given: Average Speed=28.51 mph Speed limit = 25 mph Standard deviation =5.75 mph

Q: A freeway traffic stream was observed to have a density of 22.0 veh/mi/ln when the mean speed was…

A: The objective of the question is to calculate the flow rate of traffic at a given mean speed and…

Q: Traffic on a highway is said to follow the Greenshields model with jam density of 196 pc/mi/ln. The…

A:

Q: For a specific rural road segment in northeast Colorado, the total number of crashes as well as the…

A:

Q: A proposed improvement will widen a two-lane rural highway from 9-ft-wide (per lane) to 11-ft-wide…

A: AADT =2100 veh/dayAverage of 25 crashes per year2-lane rural highway from 9-ft-wide (per lane) to…

Q: A 1.5-mile section of a two-lane road has an AADT of 10,000. In a three-year period, there have been…

A: Fatal accidents = 6Non-fatal accidents = 12AADT = 10,000Road length = 1.5 miles

Q: In which of the following scenarios using traffic simulation is more helpful than data-driven…

A: The following scenarios using traffic simulation is more helpful than data-driven predictive models:…

Highway Safety

Proper highway safety refers to the methods or rules that prevent highway travelers from being killed or severely injured. Proper highway safety measures help to protect motorists, cyclists, pedestrians, passengers on public transport, and so on.