UN R171 change reports — Driver Control Assistance System (DCAS)
UN Regulation No. 171 (ECE R171) — Uniform Provisions Concerning the Approval of Vehicles with regard to Driver Control Assistance Systems.
02 series
- 02 series — Base text
This UN Regulation does not apply to vehicles of Categories X and Y. DCAS must be switched to 'OFF' mode upon activation of an ADS feature.
01 series
- 01 series — Supplement 2
At speeds up to 130 km/h, the system may now also withhold HORs on a “Highway-like” road, which new paragraph 2.28.1. defines.
- 01 series — Supplement 1
If the manufacturer is to take remedial action addressing DCAS design, the Type Approval Authority must upload the information to DETA. Paragraph 7.2.2.2. now says “without undue delay but no later than 14 days after receipt”.
- 01 series — Base text
The system may now withhold HORs when the vehicle is located on a “Highway” and is operated at a speed up to 130 km/h.
00 series
- 00 series — Supplement 4
A manoeuvre can start only if, among other conditions, the driver is not deemed disengaged for more than 2 s immediately before its start.
- 00 series — Supplement 3
Systems that include any feature that performs system-initiated manoeuvres are not permitted to be approved to this Regulation (para. 5.3.7.2.4.).
- 00 series — Supplement 2
A DCA must clearly and prominently instruct the driver to immediately resume at least the lateral control of the vehicle.
- 00 series — Supplement 1
Reserved paragraphs 2.14. to 2.16. are deleted, and the later definitions are now numbered 2.14. to 2.30.