Scope of annex
This annex covers frequency bands and regulatory as well as informative parameters recommended for radio systems used in the field of transport and traffic telematics (road, rail and water depending on the relevant technical restrictions), traffic management, navigation and mobility management. Typical applications are used for interfaces between different modes of transport, communication between vehicles (e.g. car-to-car), between vehicles and fixed locations (e.g. car-to-infrastructure), communication from and to users as well as radar system installations. Automotive radar is defined as a moving radar device supporting functions of the vehicle. Entry e2) is limited to obstacle detection radars for rotorcraft use.
| Frequency Band | Power / Magnetic Field | Spectrum access and mitigation requirements | Modulation /occupied bandwidth | ECC/ERC Deliverable | Notes | |
|---|---|---|---|---|---|---|
| a | 5795MHz - 5805MHz |
2 W e.i.r.p. / 8 W e.i.r.p. | No requirement | Individual license may be required for the higher power of 8 W systems | ||
| b | 5805MHz - 5815MHz |
2 W e.i.r.p. / 8 W e.i.r.p. | No requirement | Individual license may be required | ||
| f | 5855MHz - 5875MHz |
* | * | ECC/REC/(08)01 | For ITS non-safety applications * See detailed requirements in related ECC Recommendation | |
| c1 | 21.65GHz - 26.65GHz |
* | * | * | ECC/DEC/(04)10 | For automotive Short Range Radars (SRR). * See detailed requirements in related ECC Decision. New SRR equipment shall not be placed onto the market |
| d1 | 24.05GHz - 24.075GHz |
100 mW e.i.r.p. | No requirement | For automotive radars | ||
| d4 | 24.075GHz - 24.15GHz |
100 mW e.i.r.p. | ≤ 1ms/40 kHz dwell time every 40ms | For automotive radars (road vehicles only). The spectrum access and mitigation requirement is given for devices mounted either behind a bumper or mounted without a bumper. A requirement for minimum frequency modulation range (applicable to FMCW or step frequency signals) or minimum instantaneous bandwidth (applicable to pulsed signal) of 250 kHz applies in addition to the requirement on maximum dwell time | ||
| d3 | 24.075GHz - 24.15GHz |
100 mW e.i.r.p. | ≤ 4µs/40 kHz dwell time every 3ms | For automotive radars (road vehicles only). The spectrum access and mitigation requirement is given for devices mounted behind a bumper. If mounted without a bumper, the requirement should be 3µs/40kHz maximum dwell time every 3ms. A requirement for minimum frequency modulation range (applicable to FMCW or step frequency signals) or minimum instantaneous bandwidth (applicable to pulsed signal) of 250 kHz applies in addition to the requirement on maximum dwell time | ||
| d2 | 24.075GHz - 24.15GHz |
0.1 mW e.i.r.p. | No requirement | For automotive radars | ||
| d5 | 24.15GHz - 24.25GHz |
100 mW e.i.r.p. | No requirement | For automotive radars (road vehicles only) | ||
| c2 | 24.25GHz - 26.65GHz |
* | * | * | ECC/DEC/(04)10 | For automotive Short Range Radars (SRR). See detailed requirements in related ECC Decision. SRR equipment may only be placed onto the market until 1 January 2018. This date is extended by 4 years for SRR equipment mounted on motor vehicles for which vehicle conformity compliance has been granted before 1 January 2018 |
| e2 | 76GHz - 77GHz |
* | * | * | ECC/DEC/(16)01 | For obstacle detection radars for rotorcraft use. Use is not possible in specific areas of some European countries due to exclusion zones implementation around RAS observatories. * See detailed requirements in related ECC Decision |
| e1 | 76GHz - 77GHz |
55 dBm peak e.i.r.p. | (note 1) | Not specified | ECC Report 262 | 50 dBm average power or 23.5 dBm average power for pulse radar only. For ground based vehicle and infrastructure systems only. The frequency band is also included in Annex 4 |
| Note 1 | Fixed transportation infrastructure radars have to be of a scanning nature in order to limit the illumination time and ensure a minimum silent time to achieve coexistence with automotive radar systems. |
Harmonised Standards
EN 300 674 sub-bands a), b)
EN 302 571 sub-band f)
EN 301 091 sub-band e1)
EN 302 288 sub-band c2)
EN 302 858 sub-bands d1) to d5)
EN 303 360 sub-band e2)
Technical parameters also referred to in the
harmonised standard
No information
Frequency issues
Sub-bands d1) to d5) as well as c1), c2):
Note that the regulation in the bands d1) to d5) for the band 24.05-24.25 GHz for automotive radars is without any plans for a time limit within CEPT (see document ECC(15)058). Only the bands c1), c2) for Short Range Radar (SRR) are time limited.