The norms were applicable in the National Capital Region and the cities of Mumbai, Kolkata, Chennai, Bangalore, Hyderabad including Secunderabad, Ahmedabad, Pune, Surat, Kanpur and Agra except in respect of four wheeled transport vehicles plying on Inter-State Permits or National Permits or All India Tourist Permits within the jurisdiction of these cities and in other areas of the country from such date as may be notified by the Central Government.
The applicability of BS-III Norm was further amended vide GSR 84 (E)/2009 in respect of Four wheelers vehicles manufactured on and from the 1st October 2010 applied to all the States and the Union Territories except National Capital Region and the cities of Mumbai, Kolkata, Chennai, Bangalore, Hyderabad including Secunderabad, Ahmedabad, Pune, Surat, Kanpur and Agra.
India is following the New European Driving Cycle (NEDC) designed to assess the emission levels of car engines and fuel economy in passenger cars (excluding light trucks and commercial vehicles).
It was effective in year 2000 in European Union Type Approval of emissions and fuel consumption from light duty vehicles [EEC Directive 90/C81/01]. The cycle consists of four repeated ECE-15 urban driving cycles (UDC) and one Extra-Urban driving cycle (EUDC).Before 2000, emissions were measured over an Indian test cycle. The test is performed on a chassis dynamometer. The entire cycle includes four ECE segments (Figure 1) repeated without interruption, followed by one EUDC segment (Figure 2). Before the test, the vehicle is allowed to soak for at least 6 hours at a test temperature of 20-30°C.It is then started and allowed to idle for 40s.The ECE is an urban driving cycle, also known as UDC.
The EUDC (Extra Urban Driving Cycle) segment has been added after the fourth ECE cycle to account for more aggressive, high speed driving modes. The maximum speed of the EUDC cycle is 120 km/h. An alternative EUDC cycle for low-powered vehicles has also been defined with a maximum speed limited to 90 km/h, Figure 3.
Type I, II and III Tests. The urban driving cycle—ECE 15, Figure 1—represents Type I test, as defined by the original ECE 15 emissions procedure. Type II test is a warmed-up idle tailpipe CO test conducted immediately after the fourth cycle of the Type I test. Type III test is a two-mode (idle and 50 km/h) chassis dynamometer procedure for crankcase emission determination.
European Stationary Cycle (ESC) test cycle was introduced together with the ETC (European Transient Cycle) and the ELR (European Load Response) tests by the Euro III emission regulation—Directive 1999/96/EC, effective year 2000—for emission measurement from heavy-duty diesel engines.
The ESC is a 13-mode, steady-state procedure that replaced the R-49 test. The engine is tested on an engine dynamometer over a sequence of steady-state modes. Emissions are measured during each mode and averaged over the cycle using a set of weighting factors. The final emission results are expressed in g/kWh.
1
Low Idle
0
15
4 minutes
2
A
100
8
2 minutes
3
B
50
10
4
75
5
6
7
25
9
C
11
12
13
14
ESC Test Modes
The European Load Response (ELR) engine test has been introduced by the Euro III emission regulation—Directive 1999/96/EC, effective year 2000—for the purpose of smoke opacity measurement from heavy-duty diesel engines. The test consists of a sequence of three load steps at each of the three engine speeds A (cycle 1), B (cycle 2) and C (cycle 3), followed by cycle 4 at a speed between speed A and speed C and a load between 10% and 100%. Speeds A, B, and C are defined in the ESC cycle. The sequence of dynamometer operation on the test engine is shown in Figure ELR Test. The final smoke value is determined as a weighted average from the mean values at speeds A, B, and C.
(a) Diesel Vehicles with GVW exceeding 3500 Kg. shall conform to the following norms.
(b)Diesel vehicles with GVW exceeding 3500 kg and fitted with Advanced exhaust after treatment system including De-NOx catalyst and / or particular trap shall additionally conform to the following norms:-
Please note that the Government of India had issued notification GSR 504 (E), dated 16thJuly 2014 wherein the Mass Emission Standards (Bharat Stage III) in respect of four-wheeled vehicles manufactured on and from the 1st October, 2014 shall not apply to the cities of Puducherry, Mathura, Vapi, Jamnagar, Ankaleshwar, Hissar, Bharatpur, Daman, Diu, Silvasa, Unnao, Rae Bareilly, Aligarh, Karnal, Valsad, Yamuna Nagar, Kurukshetra, Nizamabad, Medak and Mehboobnagar.”
The norms for M and N Category vehicles were notified vide GSR 84 (E) in 2009 for implementation from 1st April 2010. It came into force in the National Capital Region and the cities of Mumbai, Kolkata, Chennai, Bangalore, Hyderabad including Secunderabad, Ahmedabad, Pune, Surat, Kanpur and Agra except the four-wheeled transport vehicles plying on Inter-State permits or National permits or All India Tourist permits, within the jurisdiction of these cities.
The mass emission standard for Bharat Stage-IV Category M and Category N vehicles manufactured on or after the 1st April, 2010, with Gross Vehicle Weight not exceeding 3,500 kg is as under:
Limit values for TA and COP
Category
Class
* These limits are not applicable for vehicles designed to carry more than six persons including driver or vehicles whose gross vehicle weight exceeds 2,500 kg. ** These limits are applicable for vehicles designed to carry more than six persons including driver or vehicles whose gross vehicle weight exceeds 2,500 kg.
Vehicles with Gross Vehicle Weight exceeding 3,500 kg manufactured on or after the 1st April, 2010 and equipped with either the Diesel Engines or the CNG Engines or the LPG Engines shall conform to the following norms:-
(a) For Diesel Engines
(b) For Diesel Engines, CNG Engines or LPG Engines
Engine Transient Cycle (ETC) test
CO (g/kWh
NMHC (1) (g/kWh)
CH4 (2) (g/kWh
NOx (g/kWh)
PM (3) (g/kWh)
4.00
0.55
1.10
3.50
0.03
(1) A manufacturer may choose to measure the mass of total hydrocarbons (THC) instead of measuring the mass of non-methane hydrocarbon (NMHC). In this case, the limit for mass of THC should be same as for the NMHC. (2) For CNG engines only (3) For Diesel engines only
Please note that the Government of India issued notification GSR 504 (E), dated 16thJuly 2014 wherein the Mass Emission Standards (Bharat Stage IV) shall be applicable in the cities of Puducherry, Mathura, Vapi, Jamnagar, Ankaleshwar, Hissar, Bharatpur, Daman, Diu, Silvasa, Unnao, Rae Bareilly, Aligarh, Karnal, Valsad, Yamuna Nagar, Kurukshetra, Nizamabad, Medak and Mehboobnagar in respect of four wheeled vehicles manufactured on or after the 1stOctober, 2014 except the four wheeled transport vehicles plying on Inter-State Permits or National Permit or All India Tourist Permits, within the jurisdiction of the said cities.
Mass emission standards for vehicles when operating on Compressed Natural Gas (hereinafter in this rule referred to as "CNG") shall be the same as are applicable for gasoline vehicles with the exception that HC shall be replaced by Non-Methane Hydrocarbon (NMHC), where NMHC = 0.3 x HC.
Mass emission standards for vehicles when operating on Liquefied Petroleum Gas (hereinafter in this rule referred to as 'LPG') shall be the same as are applicable for gasoline vehicles with the exception that HC shall be replaced by Reactive Hydrocarbon (RHC), where RHC = 0.5 x HC.
As per Report of AFV&P 2025, May 2014, there needs to be a roadmap for the transition from the present BS IV regime to BS V & BS VI country wide for 4-wheelers. For regions where 50 ppm sulphur fuel is available, the applicable emission norms would be same as BS IV.
Euro V/ BSV
As per Report of AFV&P 2025, May 2014, Europe moved to Euro IV standards in 2005, to Euro V standards in 2008/2009 and to Euro VI in 2013. In India, where 50 pm sulphur fuel is available, the applicable emission regime is BS IV, which was notified in February 2009 under the Central Motor Vehicle Rules.
Note: The manufacturer may choose to measure the mass of total hydrocarbons (THC) instead of measuring the mass of non-methane hydrocarbon (NMHC). In this case, the limit for mass of THC should be same as for NMHC.