PD 6634-2:1999

Committees responsible
      Foreword
1 Scope
2 The economic justification and safety barriers
      2.1 General
      2.2 The case for no median safety barriers on motorways
      2.3 The case for median safety barriers on motorways
      2.4 The case for verge safety barriers on motorways
      2.5 The case for median safety barriers on all purpose roads
      2.6 The case for higher containment barriers on motorways
3 Controlled vehicle impact testing for safety barrier development
      3.1 General
      3.2 Test criteria for safety barriers
      3.3 Standard controlled barrier impact test conditions
      3.4 The European Standard for road side restraint systems
4 Test vehicle propulsion and steering control
      4.1 General
      4.2 Vehicle propulsion
      4.3 Remote steering control
      4.4 Test car speed control
5 Measurement of vehicle and restraint system test data
      5.1 General
      5.2 Photography
      5.3 Vehicle instrumentation
      5.4 Measurement of the position of a vehicle's centre of mass
      5.5 Vehicle restraint system test report
6 Vehicle stability and safety barrier characteristics
      6.1 General
      6.2 The concept of strong and weak post barriers
      6.3 Factors leading to vehicle spinout
      6.4 Vehicle lateral deceleration
      6.5 Vehicle overturn stability against a barrier
      6.6 Impact force and energy absorption
7 Vehicle impact severity indices
      7.1 General
      7.2 Impact velocity and injury
      7.3 Deceleration and injury
      7.4 Injury mechanisms
      7.5 Injury thresholds
      7.6 THIV and PHD
      7.7 The flail-space model, occupant impact velocity (OIV), and
             ride down acceleration (RDA)
      7.8 The ASI ellipsoidal envelope
      7.9 Vehicle interior deformation index (VIDI)
      7.10 Summary of Clause 7
8 Model simulation of vehicle impact into highway restraint systems
      8.1 General
      8.2 Mathematical models
      8.3 Physical scale models
      8.4 Computer simulation
9 British and European Standards on road restraint systems
      9.1 General
      9.2 BS 6579 Safety fences and barriers for highways
      9.3 BS 6779 Highway parapets for bridges and other structures
      9.4 BS 7669 Vehicle restraint systems
      9.5 EN 1317 Road restraint systems
Bibliography

Deals with the fundamentals of highway restraint systems in terms of their economic justification, measurement of test data, measurement of vehicle characteristics, impact test techniques, impact severity indices, computer modelling and the impact test reporting format with reference to British and European Standards.

This part of PD 6634 describes the fundamentals of highway restraint systems in terms of their economic justification, impact test techniques, measurement of test data, measurement of vehicle characteristics, impact severity indices, computer modelling and the impact test reporting format with reference to British and European Standards.