TTE4804 Quiz_3_Spring11

# TTE4804 Quiz_3_Spring11 - unsafe speed for the curves in...

This preview shows pages 1–3. Sign up to view the full content.

Page 1 of 3 Course: TTE 4804/5805—Highway Geometric Design Date : Thursday, March 3, 2011 Task: Quiz #3 Name: _____________________ Instructions This is a 15-minutes closed-book, closed-notes quiz. Please present your work neatly and legibly. PROBLEM A two-lane highway (two 12-ft lanes with negligible shoulders) has a posted speed limit of 50 MPH, and on one section, has both horizontal and vertical curves as shown in the figure below. A recent daytime accident (driver traveling eastbound struck a stationary roadway object) resulted in a fatality and a lawsuit alleging that the 50 MPH posted speed limit was

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: unsafe speed for the curves in question and a major cause of the accident. Page 2 of 3 1.1 Evaluate the adequacy of horizontal sight distance 1.2 Evaluate the adequacy of the roadway horizontal curvature ( use f max = 0.14) Page 3 of 3 1.3 Evaluate the adequacy of the vertical curvature. ================================================== FORMULAS G) g a .( V Vt . SSD ± + = 30 47 1 2 ) ( 15 max max 2 min f e V R + = L S A S S L L S S AS L > ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ + − = < + = 5 . 3 400 2 5 . 3 400 2 ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ − = R 28.65S Cos 1 R M...
View Full Document

## This note was uploaded on 10/29/2011 for the course TTE 4804 taught by Professor Moses during the Spring '11 term at FSU.

### Page1 / 3

TTE4804 Quiz_3_Spring11 - unsafe speed for the curves in...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online