Appendix 1 F1
United Kingdom
Types of dual-fuel engines and vehicles - list of main operational requirements
| GER WHTC | Idle on diesel | Warm-up on diesel | Operation on diesel solely | Operation in absence of gas | Comments | |
|---|---|---|---|---|---|---|
| Type 1A | GER WHTC ≥ 90 % | NOT Allowed | Allowed only on service mode | Allowed only on service mode | Service mode | |
| Type 1B | GER WHTC ≥ 90 % | Allowed only on Diesel mode | Allowed only on diesel mode | Allowed only on diesel & service modes | Diesel mode | |
| Type 2A | 10 % < GER WHTC < 90 % | Allowed | Allowed only on service mode | Allowed only on service mode | Service mode | GER WHTC ≥ 90 % allowed |
| Type 2B | 10 % < GER WHTC < 90 % | Allowed | Allowed only on diesel mode | Allowed only on diesel & service modes | Diesel mode | GER WHTC ≥ 90 % allowed |
| Type 3A | NEITHER DEFINED NOR ALLOWED | |||||