What is a traffic engineering study?

A traffic engineering study is the observation and analysis of road and traffic characteristics to guide the application of traffic engineering principles. The study of traffic limits includes the following:

- Review of the road's environment, features, and conditions and traffic characteristics
- Observation and measurement of vehicle speeds at one or more representative spots along the road in ideal weather and under free-flowing traffic conditions
- Analysis of the vehicle speeds to determine average and 85th percentile speeds and other characteristics
- Review of the road's crash history
- Review of any unusual conditions not readily apparent to the driver

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1. Why are there paint marks in the road?
2. What are the little flags in my front yard?
3. Is the road going to be widened?
4. County water is running across my property - can I get it diverted somewhere else?
5. How can I get a signal constructed at an intersection?
6. Where can I find a list of roads closed due to weather, construction, or special events?
7. How are speed limits set?
8. What conditions influence speed limits?
9. What is a traffic engineering study?
10. What is the 85th percentile speed?