In the case of machinery or parts of machinery designed to work together, the machinery must be designed and constructed in such a way that the stop controls, including the emergency stop devices, can stop not only the machinery itself but also all related equipment, if its continued operation may be dangerous.

In the case of machinery or parts of machinery designed to work together, the machinery must be designed and constructed in such a way that the stop controls, including the emergency stop devices, can stop not only the machinery itself but also all related equipment, if its continued operation may be dangerous.

2 000 vehicles per laneAdditional conditions for implementation to be mandatory, or comments500 - 1 000 m>1 000 m500 - 1 000 m1 000 - 3 000 m>3 000 mStructuralMeasuresTwo tubes or morePoint 2.1Mandatory where a 15-year forecast shows that traffic > 10 000 vehicles/lane.Gradients ≤ 5 %Point 2.2Mandatory unless not geographically possible.Emergency walkwaysPoint2.3.1Point2.3.2Mandatory where there is no emergency lane, unless the condition in Point 2.3.1 is respected.In existing tunnels where there is neither an emergency lane, nor an emergency walkway additional/reinforced measures shall be taken.Emergency exits at least every 500 mPoint ...[+++]2.3.3 — Point 2.3.9Implementation of emergency exits in existing tunnels to be evaluated case-by-case.Cross-connections for emergency services at least every 1 500 mPoint 2.4.1Mandatory in twin-tube tunnels longer than 1 500 m.Crossing of the central reserve outside each portalPoint 2.4.2Mandatory outside twin- or multi-tube tunnels wherever geographically possible.Lay-bys at least every 1 000 mPoint 2.5Mandatory in new bi-directional tunnels >1 500 m without emergency lanes.

When traffic stops in a tunnel, road users should maintain a minimum distance of five metres from the vehicle in front, except if this is not possible due to an emergency stop.

Once active operation of the emergency stop control has ceased following a stop command, that command must be sustained by engagement of the emergency stop device until that engagement is specifically overridden; it must not be possible to engage the device without triggering a stop command; it must be possible to disengage the device only by an appropriate operation, and disengaging the device must not restart the machinery but only permit restarting.

In the case of machinery or parts of machinery designed to work together, the manufacturer must so design and construct the machinery that the stop controls, including the emergency stop, can stop not only the machinery itself but also all equipment upstream and/or downstream if its continued operation can be dangerous.