Research Article
Developing a Web-Based Advisory Expert System for Implementing Traffic Calming Strategies
Table 3
Results from the questionnaire about the importance of the parameters.
| Category | Parameters | Group 1 | Group 2 | Group 3 | value | Mean | SD | Mean | SD | Mean | SD |
| Traffic parameters | Speeding in urban streets | 3.80 | 0.45 | 4.60 | 0.55 | 4.40 | 0.55 | 0.074 | Through traffic | 3.60 | 0.55 | 4.20 | 0.84 | 4.20 | 0.45 | 0.262 | Accident rate | 4.20 | 0.84 | 3.80 | 0.84 | 4.00 | 0.71 | 0.735 | Parking occupancy | 4.20 | 0.84 | 4.40 | 0.55 | 4.00 | 0.70 | 0.679 | Heavy vehicle | 4.40 | 0.55 | 4.00 | 0.70 | 4.00 | 0.70 | 0.557 |
| Geometric design parameters | Width of streets | 4.00 | 0.70 | 4.40 | 0.55 | 4.40 | 0.55 | 0.503 | Length of streets | 4.20 | 0.84 | 4.00 | 0.70 | 4.60 | 0.55 | 0.420 | Grade | 4.20 | 0.45 | 4.20 | 0.84 | 4.20 | 0.84 | 1.000 | Curves | 4.40 | 0.55 | 4.00 | 0.71 | 4.40 | 0.55 | 0.503 |
| Infrastructure parameters | Sidewalk | 3.80 | 0.84 | 4.20 | 0.84 | 4.40 | 0.55 | 0.462 | Bike lane | 4.00 | 0.70 | 4.20 | 0.84 | 4.20 | 1.10 | 0.921 | Crosswalk | 4.20 | 0.84 | 4.60 | 0.55 | 4.00 | 1.00 | 0.516 | Intersection | 4.20 | 0.84 | 3.80 | 0.84 | 4.20 | 0.84 | 0.691 | Street lighting | 4.00 | 0.71 | 4.60 | 0.55 | 4.20 | 0.84 | 0.420 | Bus stops | 4.00 | 0.00 | 3.80 | 0.84 | 4.40 | 0.55 | 0.284 |
| Land-use parameters | Density | 4.20 | 0.84 | 4.40 | 0.55 | 4.60 | 0.55 | 0.641 | School | 4.40 | 0.89 | 3.60 | 0.89 | 4.00 | 0.70 | 0.351 | Trip generators | 4.00 | 0.70 | 3.80 | 0.84 | 4.00 | 1.00 | 0.914 | Residential complexes | 4.20 | 0.84 | 4.40 | 0.55 | 4.60 | 0.55 | 0.641 |
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