Carbon footprint of humans and their travel by various modes, Trees needed to compensate.
Fuel and vehicle type	Calorific Value	MJ/litre	CO2 Produced	Mileage of vehicle	Daily Travel	Shared by Persons	Fuel consumed	Heat Released	CO2	Per Year (22 days per mo)	Trees Required
	MJ/kg	MJ/litre	kg/litre	KMPL	KM	Nos	Litre / day / head	MJ / day / head	kg / day / head	kg / year / head	Nos / head
Human activity Food Intake equivalent 8.37 MJ/day/head								5.18	1.00	264	44
2 Wheeler Petrol	45.8	33.7	2.3	55	30	1	0.55	18.38	1.25	331	55
Diesel Car	45.5	36.9	2.64	18	30	2	0.83	30.75	2.20	581	97
Petrol Car	45.8	33.7	2.3	15	30	2	1.00	33.70	2.30	607	101
Petrol Car	45.8	33.7	2.3	15	30	1	2.00	67.40	4.60	1214	202
Petrol Auto Rickshaw	45.8	33.7	2.3	28	30	3	0.36	12.04	0.82	217	36
20 Seater Bus	45.5	36.9	2.64	7	30	15	0.29	10.54	0.75	199	33
55 Seater Bus	45.5	36.9	2.64	3	30	45	0.22	8.20	0.59	155	26
Diesel Engine Train 25% Fuel-Traction Efficiency Friction Factor 0.0015, 50 Tonne x 20 coaches	45.5	36.9	2.64	0.627	30	1200	0.04	1.47	0.11	28	4.6
Electric Engine Train 40% Fuel-Elec-Traction Efficiency Friction Factor 0.0015, 50 Tonne x 20 coaches	45.5	36.9	2.64	1.003	30	1200	0.02	0.92	0.07	17	2.9
	An average sized tree eliminates kg per day of CO2 ( 6 kg / yr )								0.0164