Paratransit

Operations analysis and improvements for the Paratransit service at the University of Michigan.

Transcript

1. PARATRANSIT
2. <<< THE SERVICE A free-of-charge transportation service for faculty, staff, and students, with temporary or permanent physical disabilities.
3. <<< THE PROCESS Scheduled Non-Scheduled (Call-in) Supervisor (Writes on run- sheet) Supervisor (Calls bus driver to check availability) Bus Driver (If available, driver writes into schedule) 2 Busses Capacity – Close Pick-up: 6 passengers/hr Avg Pick-up: 4 passengers/hr Far Pick-up: 3 passengers/hr Pick-up Drop-off If 1st time passenger is picked up Taxi If both busses are occupied, taxi is called
4. <<< THE PROCESS Current Daily Schedule 7a 8a 9a 10a 11a 12p 1p 2p 3p 4p 5p 6p 7p 8p Bus #1 Bus #2 Bus #3 Added Van Bus #2
5. PRIMARY GOALS Goals - Determine improvements in order to reduce taxi costs - Analyze and eliminate department inefficiencies February Taxi Costs: $1857.50 for 195 taxi rides
6. RUN SHEETS & TAXI LOG
7. ANALYSIS
8. A SHBONE ANALYSIS Paying taxis to pickup Passengers / wait time Resources Management/Planning Bus drivers Process Not enough buses Not enough drivers Slow drivers Scheduling is not optimal PickǦup locations too far apart Passengers can call in Significant variability throughout the day Large service radius Other resources available Demand in clusters at top of the hour Call taxis – incur extra costs Passengers need offǦhour service Increased variability (interǦ arrival times) Expensive No drivers scheduled at some periods Cost
9. <<< VUT ANALYSIS a = 15.6 minutes p = 10.2 minutes CVa = 1.28 CVp = 0.636 u = 0.327 m = 2 buses Average waiting time 1.54 minutes
10. PERIODS OF HEAVY DEMAND
11. - 1.54 minutes based on whole day - Zoom in on a period of heavy demand (m=2) VUT ANALYSIS 8 - 9 am 5.75 minutes 9 - 10 am 13.8 minutes 11 am - 1 pm 8.72 minutes 4 - 6 pm 5.75 minutes
12. - Zoom in on a period of heavy demand (m=3) ADD ANOTHER SERVER 8 - 9 am 3.12 minutes 9 - 10 am 8.24 minutes 11 am - 1 pm 4.98 minutes 4 - 6 pm 3.12 minutes
13. ADDING SERVERS Taxis Other Buses Vans Utilization Time (mins)
14. TAXI USAGE
15. <<< A DAY IN ACTION
16. POOLING RESOURCES
17. POOLING RESOURCES
18. POOLING RESOURCES
19. POOLING RESOURCES
20. RECOMMENDATIONS
21. NO SHOW & CALL-IN POLICIES - Current process: no show, buses wait, there’s someone else that could have been served - Helps reduce unecessary idle time - Eliminates CVa, reducing wait time Install three-strike system for passengers who don’t show up when scheduled. Install 24-hour Call Ahead Policy.
22. NEW POLICIES: strikes & 24-hour rule Utilization Time (mins)
23. NEW POLICIES: strikes & 24-hour rule Time (mins) Utilization
24. NPV - NEW BUS OR VAN? New Bus: $80,000, 4 hours a day Paid back in 13 years - 10 year period, 2% interest rate New Van: $15,000, 4 hours a day Paid back in 2.06 years $54,970 saved over 10 years - New Van is best option
25. SCHEDULING RECOMMENDATIONS Add new van from 7 - 11 am. Shift Bus 2 start time from 8:05 am to 7:45 am.
26. Summary: SCHEDULE RECOMMENDATIONS Current Daily Schedule 7a 8a 9a 10a 11a 12p 1p 2p 3p 4p 5p 6p 7p 8p Bus #1 Bus #2 Bus #3 Added Van Bus #2 Bus #1 Bus #3 Recommended Daily Schedule 7a 8a 9a 10a 11a 12p 1p 2p 3p 4p 5p 6p 7p 8p
27. <<< EXTEND LATE SHIFT? Why This is Bad... Could extend one shift to cover period (8-10 pm) currently served only by taxis Not Cost Effective - Leaving late pick-ups to cabs is cheaper by $383.25 per month 8-10 pm period in February: $96.75 taxi fees $480 labor cost (20 days x $12/hr x 2 hrs)
28. Implement a three-strike system for riders who don’t show up Implement a 24-hour Call Ahead Policy Add van shift from 7 am - 11 am SUMMARY OF RECOMMENDATIONS