The current version of IWalkways does not work with crowding. In the future, I would like to include this as one of the criteria for walkway design. The following are some notes I was making before beginning to work on this tool.
What are the effects of crowding on people?
How does it affect traffic rate?
When are there too many people on a walk before they start to use the grass?
Fruin (1971) looks like a promising resource to answer these questions
Probability of Conflicts from Fruin:
|
Square Feet Area/Pedestrian |
Conflict Probability |
|---|---|
|
0.0 |
1.00 |
|
12.5 |
1.00 |
|
17.5 |
0.65 |
|
22.5 |
0.60 |
|
27.0 |
0.50 |
|
32.0 |
0.50 |
|
37.0 |
0.04 |
|
42.5 |
0.02 |
Level-of-service descriptions for walkways:
|
Level of Service |
Average Area Occupency |
Average Flow Volume |
|---|---|---|
|
A |
>=35 |
0-7 |
|
B |
25-25 |
7-10 |
|
C |
15-25 |
10-15 |
|
D |
10-15 |
15-20 |
|
E |
5-10 |
20-25 |
|
F |
<=5 |
up to 25 |