INHALT

Regulation No 78 of the Economic Commission for Europe of the United Nations (UNECE) — Uniform provisions concerning the approval of vehicles of categories L 1 , L 2 , L 3 , L 4 and L 5 with regard to braking [2015/145]

Regulation No 78 of the Economic Commission for Europe of the United Nations (UNECE) — Uniform provisions concerning the approval of vehicles of categories L
1
, L
2
, L
3
, L
4
and L
5
with regard to braking [2015/145]
1. SCOPE
2. DEFINITIONS
3. APPLICATION FOR APPROVAL
4. APPROVAL
5. SPECIFICATIONS
5.1. Brake system requirements
5.1.2. Service brake system control operation
5.1.3. Secondary brake system control operation
5.1.4. Parking brake system
5.2. Durability
5.3. Measurement of dynamic performance
5.4. Brake lining materials:
6. TESTS
7. MODIFICATIONS OF VEHICLE TYPE OR BRAKING SYSTEM AND EXTENSION OF APPROVAL
8. CONFORMITY OF PRODUCTION
9. TRANSITIONAL PROVISIONS
10. PENALTIES FOR NON-CONFORMITY OF PRODUCTION
11. PRODUCTION DEFINITELY DISCONTINUED
12. NAMES AND ADDRESSES OF TECHNICAL SERVICES RESPONSIBLE FOR CONDUCTING APPROVAL TESTS AND OF ADMINISTRATIVE DEPARTMENTS
ANNEX 1 (*)
APPENDIX
LIST OF VEHICLE DATA FOR THE PURPOSE OF REGULATION No 90 APPROVALS
ANNEX 2
ARRANGEMENTS OF APPROVAL MARKS
MODEL A
(see paragraph 4.4 of this Regulation)
MODEL B
(see paragraph 4.5 of this Regulation)
ANNEX 3
TEST CONDITIONS, PROCEDURES AND PERFORMANCE REQUIREMENTS
1. GENERAL
1.1. Test surfaces
1.1.1. High friction surface:
1.1.2. Low friction surface:
1.1.3. Measurement of PBC:
1.1.4. Parking brake system tests:
1.1.5. Test lane width:
1.2. Ambient temperature
1.3. Wind speed
1.4. Test speed tolerance
1.5. Automatic transmission
1.6. Vehicle position and wheel lock:
1.7. Test sequence
2. PREPARATION
2.1. Engine idle speed
2.2. Tyre pressures
2.3. Control application points and direction
2.4. Brake temperature measurement
2.5. Burnishing procedure
3. DRY STOP TEST — SINGLE BRAKE CONTROL ACTUATED
3.1. Vehicle condition:
3.2. Test conditions and procedure:
3.3. Performance requirements
4. DRY STOP TEST — ALL SERVICE BRAKE CONTROLS ACTUATED
4.1. Vehicle condition:
4.2. Test conditions and procedure:
4.3. Performance requirements
5. HIGH SPEED TEST
5.1. Vehicle condition:
5.2. Test conditions and procedure:
5.3. Performance requirements:
6. WET BRAKE TEST
6.1. General:
6.2. Vehicle condition:
6.3. Baseline test
6.3.1. Test conditions and procedure:
6.4. Wet brake stop
6.4.1. Test conditions and procedure:
6.5. Performance requirements
7. HEAT FADE TEST
7.1. General:
7.2. Baseline test
7.2.1. Vehicle condition:
7.2.2. Test conditions and procedure:
7.3. Heating procedure
7.3.1. Vehicle condition:
7.3.2. Test conditions and procedure:
7.4. Hot brake stop
7.4.1. Test conditions and procedure:
7.5. Performance requirements
8. PARKING BRAKE SYSTEM TEST — FOR VEHICLES EQUIPPED WITH PARKING BRAKES
8.1. Vehicle condition:
8.2. Test conditions and procedure:
8.3. Performance requirements:
9. ABS TESTS
9.1. General:
9.2. Vehicle condition:
9.3. Stops on a high friction surface:
9.3.1. Test conditions and procedure:
9.3.2. Performance requirements
9.4. Stops on a low friction surface:
9.4.1. Test conditions and procedure:
9.4.2. Performance requirements
9.5. Wheel lock checks on high and low friction surfaces:
9.5.1. Test conditions and procedure:
9.5.2. Performance requirements:
9.6. Wheel lock check — high to low friction surface transition:
9.6.1. Test conditions and procedure:
9.6.2. Performance requirements:
9.7. Wheel lock check — low to high friction surface transition:
9.7.1. Test conditions and procedure:
9.7.2. Performance requirements:
9.8. Stops with an ABS electrical failure:
9.8.1. Test conditions and procedure:
9.8.2. Performance requirements:
10. PARTIAL FAILURE TEST — FOR SPLIT SERVICE BRAKE SYSTEMS
10.1. General information:
10.2. Vehicle condition:
10.3. Test conditions and procedure:
10.4. Performance requirements:
11. POWER-ASSISTED BRAKING SYSTEM FAILURE TEST
11.1. General information:
11.2. Test conditions and procedure:
11.3. Performance requirements
APPENDIX
ALTERNATIVE METHOD FOR THE DETERMINATION OF PEAK BRAKING COEFFICIENT (PBC)
(see paragraph 1.1.3 to this annex)
1.1. General:
1.2. Vehicle condition:
1.3. Test conditions and procedure: