| Devices of S3 or S4 category: mandatory on M1 and N1 categories of vehicles, except for chassis-cabs and those N1 category vehicles with open cargo space; optional on other categories of vehicles. | a0c0 |
| Devices of S3 or S4 category: mandatory on M1 and N1 categories of vehicles, except for chassis-cabs and those N1 category vehicles with open cargo space; optional on other categories of vehicles. | a0c0 |