India - AIS-150 Requirements for Approval of Vehicles of Categories M2, M3, N and T with Regard to Braking

​India has published standard AIS-150 regarding Requirements for Approval of Vehicles of Categories M2, M3, N and T with Regard to Braking.

This Standard covers requirement for M2, M3 and N category of vehicles. For N1 category manufacturer has an option to test their vehicles as per AIS-151 or this standard. An informative Annex X has been incorporated in this document indicating corresponding clauses of this document and UN R 13 (Revision 8 Amendment 4).
This standard is aligned with UN R 13 (Revision 8 Amendment 4). However, keeping in view Indian context this standard is having following differences as compared to UN R:
a) Trailers are designated as ‘T’ against ‘O’
b) Coefficient of adhesion of road surface to be at least 0.8 whereas in ECE requirement is given as subjective.
c) Type II A test is applicable only for few categories of vehicles
d) Additional India specific requirements are added as below:
1) Drive away chassis test procedure;
2) Criteria for extension of approval to be used for selection of vehicle for testing and extension of approvals added;
3) Test procedure Annex added to avoid interpretation issue; and
4) Tolerance on test speed added to ± 2 percent;
e) Requirements of ‘adhesion utilization’ for N1 & N2 category vehicles have been kept in abeyance till the time ABS is made mandatory for these vehicles.
f) For clarity the testing procedure is given in Annex B which also contains the requirements described in other Annexes. Hence there is a possibility of duplication in case of duplication; whatever is prescribed in Annex B overrides the others.

This standard applies to the braking of power-driven vehicles individually and to trailers individually of categories M2, M3, N and T as defined in AIS 053 / IS 14272:2011 Automotive Vehicles –Types – Terminology (first revision).