4. thrust-reversing system failing to operate or operating inadvertently;

The braking performance of the trailer can be calculated either from the braking rate of the towing vehicle plus the trailer and the measured thrust on the coupling or, in certain cases, from the braking rate of the towing vehicle plus the trailer with only the trailer being braked.

Your Committee recognizes that some measures contained in the Bill do not go as far as some interested parties might wish; conversely, some measures go too far in the view of other parties.

2.SYMBOLS AND DEFINITIONS (The reference brake symbols shall have the suffix e) P=normal reaction of road surface on the axle under static conditions C=camshaft input torque Cmax=maximum technically permissible camshaft input torque C0=threshold camshaft input torque, i.e. minimum camshaft torque necessary to produce a measurable brake torque R=tyre rolling radius (dynamic) T=brake force at tyre/road interface M=brake torque = T 7 R z=braking rate P T = RPM s=actuator stroke (working stroke plus free stroke) Sp=effective stroke - the stroke at which the output thrust is 90 % of the average thrust (ThA) ThA=average thrust - the average th ...[+++]rust is determined by integrating the values between one-third and two-thirds of the total stroke (smax) >START OF GRAPHIC>

Your Committee recognizes that some measures contained in the Bill do not go as far as some interested parties might wish; conversely, some measures go too far in the view of other parties.

Testing already applies to heavier vehicles by virtue of directive 77/143; cars are tested in some Member States, but at different degrees of scope and severity. b. Improvements to the existing braking directive, including requirements for anti-lock systems for heavy vehicles; c. Side guards for heavy vehicles on which a proposal will be submitted by the end of 1985. d. Spray suppressors for heavy vehicles, on which a proposal will be submitted during the course of the "Year". e. Driving licence : Proposals for further harmonisation of the conditions for obtaining driving licences will be presented by the end of 1985 or early in 1986.T ...[+++]he Commission will also consider making appropriate amendments to Directive 80/1263 with a view to phasing out the existing rules concerning the exchange of driving licences. f. Transport of Dangerous Goods : the Commission will introduce two proposals in the field : - one to provide more frequent and more specific inspection of vehicles transporting certain dangerous goods; and - another to introduce a harmonised training programme for drivers of such vehicles.