Measures for Airlines to Reduce Airport Congestion Fees: Scheme Design and Performance Assessment

Table 6

Performance contrast of two methods.

Scope	Index	Original	Schedule adjustment	Flight merging
				Scheme (a)	Scheme (b)	Scheme (c)
The number of flights	Total flights	529	529	520	520	514
	The number of charged flights	448	444	439	439	433
	The number of adjusted flights	—	6	18	18	30
	The number of affected flights	—	73	115	64	135
Economic benefits	Total congestion fees (RMB)	2,028,678	1,877,689	1,705,346	1,716,655	1,650,033
	Fees per charged flight (RMB)	4429	4100	3993	4145	3957
	Fees per flight (RMB)	3835	3550	3448	3579	3410
	Fees per seat (RMB)	22.04	20.40	19.37	20.31	19.02
	Change in value of total fees (RMB)	—	−150,989	−172,344	−76,314	−211,065
	Change in value of fees for all adjusted flights (RMB)	—	−108,146	−92,365	−29,499	−109,951
	Change in value of fees for all affected flights (RMB)	—	−42,843	−79,979	−46,815	−101,114
	Change in value of fees per adjusted flight (RMB)	—	−18,024	−5131	−1639	−3665
	Change in value of fees per affected flight (RMB)		−587	−695	−731	−749
Operational benefits	The longest queue length	30	30	30	30	30
	The shortest queue length	0	0	0	0	0
	The average queue length	10.74	10.41	10.35	10.57	10.21
	The longest span in queue length	—	22 (30 ⟶ 8)	17 (30 ⟶ 13)	6 (15 ⟶ 9, 13 ⟶ 7)	17 (30 ⟶ 13)
	The number of flights with a queue length of 26–30	2	1	1	2	1
	The number of flights with a queue length of 21–25	8	3	6	8	6
	The number of flights with a queue length of 16–20	23	23	19	21	19
	The number of flights with a queue length of 11–15	200	185	178	182	169
	The number of flights with a queue length of 6–10	215	232	235	226	238
	The number of flights with a queue length of 1–5	21	25	21	21	21
	The number of flights slot without queuing	60	60	60	60	60
Environmental benefits	Total emissions (kg)	169,210	156,616	152,739	156,743	150,289
	Total environmental costs (RMB)	78,184	72,365	70,803	72,491	69,703
	Change in value of total emissions (kg)	—	−12,594	−16,471	−12,467	−18,921
	Change in value of total environmental costs (RMB)	—	−5819	−7381	−5693	−8481

Note. Bold italic numbers have the best performance of each index.