Transportation Engineering Flashcards
1
Q
A
A
Number of crashes
2
Q
Ai
A
Area of cross section (average end area method)
3
Q
Am
A
Area at midpoint of two cross sections
4
Q
ai
A
Layer (course) strength coefficient
5
Q
AADT
A
Average annual daily traffic
6
Q
AASHTO
A
American Association of State Highway and Transportation Officials
7
Q
ADT
A
Average daily traffic
8
Q
C
A
Length of Chord
9
Q
c
A
Length of subchord
10
Q
CF
A
Cubic feet
11
Q
CRF
A
Overall crash reduction factor
12
Q
CRi
A
Crash reduction factor for a specific countermeasure i