(1) TNC Periods. “Period 1” are those miles traveled by a TNC vehicle when a TNC vehicle driver or operator is logged onto the app and waiting for a ride match. “Period 2” are those miles traveled by a TNC vehicle when a TNC vehicle driver or operator has accepted a ride request and is en route to the passenger. “Period 3” are those miles traveled by a TNC vehicle when the passenger, or passengers, are in the TNC vehicle and en route to their destination until the passenger exits the vehicle. This definition is meant to be consistent with the CPUC Commission Decision 14-11-043 that established Periods 1, 2, and 3.

(2) Passenger Miles Traveled. “Passenger Miles Traveled” or “PMT” means the miles traveled by a passenger, or miles traveled by each passenger if there are multiple passengers recorded in the app for a trip, in a TNC vehicle or other transport mode provided by the TNC.

(1) A TNC passenger service fleet shall not exceed the annual greenhouse gas (GHG) targets shown in Table 1.

(2) A TNC shall calculate its greenhouse gas emissions per passenger mile annually using Equation 1. Unless otherwise specified, all calculations are for all vehicle trips summed over the calendar year. The numerator of Equation 1 is calculated by multiplying the CO₂ emissions factor with the VMT for each trip to arrive at a grams CO₂ value per trip. Summing the grams CO₂ per trip values for all trips yields total grams of CO₂ for the fleet of TNC vehicles for the year. The denominator of Equation 1 is calculated by multiplying a compliance occupancy value with the Period 3 VMT of each trip to arrive at PMT per trip. Taking the sum of PMT per trip values for all trips yields total PMT for the fleet of TNC vehicles for the year. A trip shall be included in a calendar year calculation if that trip starts in that calendar year.

(3) Equation 1.

(4) Tables 2 and 3 - CO₂ Emission Factor Look-up Table. For each TNC trip calculated using Equation 1, the CO₂ factor shall be set to the value in grams CO₂ per mile (g CO₂/mi) in Table 2 and Table 3 that corresponds to the vehicle model year, vehicle category, and vehicle propulsion system for the associated TNC vehicle.

(5) Compliance occupancy values. For each TNC trip calculated using Equation 1, the compliance occupancy shall be set to the value in Table 4 for that type of trip. If the type of trip is unknown, the trip shall be assumed to be “Non-pooled.”

(6) If the total calculated grams CO₂/PMT as set forth in section 2490.1(c)(3) for a given calendar year does not result in a whole number, the number shall be rounded up to the nearest whole number if the tenths digit contains a 5 or higher, or rounded down to the nearest whole number otherwise.

(7) Exemptions. Trips on TNC apps that are requested and fulfilled as wheelchair-accessible vehicle trips shall not be included in the calculation of Equation 1.

(1) If a TNC's annual grams CO₂/PMT emissions are less than the requirement shown in Table 1 for that year, CPUC shall issue to the TNC over-compliance credits equal to the difference.

(2) A TNC may use over-compliance credits towards compliance with their grams CO₂/PMT requirement in any of the subsequent three calendar years. Unused credits expire after the three-year period. Credits may not be used to comply with prior calendar years.

(3) Credits are in the unit of grams CO₂/PMT. If the calculated grams CO₂/PMT set forth in § 2490.1(c)(3) in a given calendar year does not result in a whole number, the number must be rounded up to the nearest whole number if the tenths digit contains a 5 or higher, or rounded down to the nearest whole number otherwise. If the rounding results in a difference of 0, then no credits shall be issued for that calendar year.

(4) Table 5 provides an example of using over-compliance credits. The example TNC over-complies by 20 grams CO₂/PMT in 2027 and CPUC issues 20 credits. The TNC may use those 20 credits in 2028, 2029, or 2030, and in this example, chooses to use them in 2029 and 2030. The TNC then over-complies by 9 grams CO₂/PMT in 2028 and CPUC issues 9 credits. The TNC may use those 9 credits in 2029, 2030, or 2031, and in this example, chooses to use them in 2031.

(1) For each calendar year, a TNC shall meet or exceed the percent eVMT targets shown in Table 6.

(2) The percent eVMT shall be calculated using Equation 2.

Equation 2.

(3) If the total calculated percent eVMT as set forth in section 2490.1(e)(2) for a given calendar year does not result in a whole number, the number shall be rounded up to the nearest whole number if the tenths digit contains a 5 or higher, or rounded down to the nearest whole number otherwise.