1. Traffic Impact of Pedestrianisation in Stellenbosch
Wilko Mohr
Stellenbosch University
Supervisor: Prof SJ Andersen
Jesus is with you!

2. Overview Problem Statement Objectives Methods and Results Conclusions
Recommendations

3. Problem Statement Pedestrianisation? Increase in private vehicle usage
Increases transport related problems such as congestion and accidents
Largely evident in historic city centers
How can this problem be tackled in Stellenbosch?
Is pedestrianisation a feasible option?
Pedestrianisation?
Closing off a street to create a pedestrian zone

4. Objective: Pedestrianise Micro simulation model
Lit. Review
Best practice
Operational
Status Quo
Parking usage
Movement pattern
Traffic levels
Traffic flow
Parking surveys
Number plate surveys
Traffic counts
Micro simulation model
Solutions approach
Current situation
Relevant factors
Data gathering and analysis
Options development
Proposed solution P
Define traffic impacts
Evaluate results
Comment on feasibility 4

5. Parking studies 19:00-20:00 12:30-13:30 15:30-16:30 08:00-09:00
Volume/Capacity Ratio : : : :
19:00-20:00
Volume/Capacity Ratio : : : :
12:30-13:30
Volume/Capacity Ratio : : : :
15:30-16:30
08:00-09:00
Volume/Capacity Ratio : : : :
Parking studies
Two different approaches:
Parking utilisation
Manual parking occupancy counts
Volume/Capacity comparison over various time intervals
Private vehicle parking & Loading zones
High demand times?
Occupancy percentage?

6. Parking studies (cont’d.)
Licence plate analysis
Data from Municipality
Volume into and volume out of CBD
With licence plates recorded
Circulation of traffic becomes evident
Contributor to traffic problems
Table: Frequency of vehicles entering the CBD (24/04/2017)
Frequency of entry
No of vehicles 1
153 2 71 3 41 4 24 5+
105
61% of CBD traffic is circulatory
27% circulates 5+ times

7. Operational implementation
: Pedestrian precinct 1 2 3 4 5 6
Traffic impact of operational aspect?
Monitoring vehicular access to area
Entrance and exit control
Least impact scheme to be used

8. PTV Vissim traffic microsimulation
Analysing impact on traffic flow behaviour
Model true to reality
Lane widths, no. of lanes, vehicle types etc.
Manual traffic volume counts (AM and PM)
Base vs. pedestrianised scenario
Considering LOS, queue lengths & delay time
At six main intersections

9. Vissim simulation (cont’d.)
Video

10. Vissim simulation (cont’d.)B A

11. Conclusions Parking studies High occupancy ratio
Circulatory traffic a problem
Sufficient parking at Stelkor
Operational Implementation
Best concept development
Specific entrance and exit control
Vissim simulation
Traffic impact manageable
Implementation possible

12. Recommendations Implement pedestrianisation scheme
Create pedestrian focused environment
Utilise the Stelkor parking
Increased public transport facilities
Beyond Stellenbosch

13. Thank You!