Appendix: Adjustments to the Gridwise Data - Gig Passenger and Delivery Driver Pay in Five Metro Areas

5.1.1 Overlap at the beginning of a shift First, we determine whether only the P3 time of the trip overlaps the beginning of the shift, or whether the P2 + P3 time overlaps. [...] We then extend the shift start time to match the request time of the overlapping trip (i.e., the beginning of P2 time) and add the remaining trip distance to the total shift distance. [...] After determining whether the P2 time or both P2 and P3 time overlapped, we extend the end time of the shift to match the end time of the overlapping trip. [...] We determined the percentage overlap Appendix: Adjustments to the Gridwise Data 9 for each segment (P2 and P3 time) and extended the shift start time to match the trip request time and the shift end time to match the trip end time. [...] Appendix: Adjustments to the Gridwise Data 11 We then calculated the P1 shift distance as the difference between the total shift distance and the sum of the P2 and P3 shift distances.