Dangerous Speed Humps at North Head
Manly NSW Australia
Speed humps were installed by NSW National Parks & Wildlife Service (NPWS) at North Head several years ago to slow motor vehicle traffic and help protect long-nosed bandicoots.
But the speed humps pose an unacceptable hazard for cyclists who use the road for recreation and exercise.
Cyclists are forced to either negotiate the speed humps directly - at risk of personal injury and bicycle damage - or go around them. But the edges of the speed humps are very narrow and poorly maintained (see pictures). This can force cyclists dangerously onto the wrong side of the road in a further effort to avoid them.
The speed humps at North Head are unsatisfactory for cycling. According to Austroads:
“Flat-top road humps with ramps of 1:15 to 1:20 relative to
the gradient of the road are generally regarded as ‘bicycle
friendly’. Side slopes across the line of travel should not be
severe. Transitioned ramps (e.g. sinusoidal humps) are
recommended (Webster & Layfield 1998).”
But the North Head speed humps pictured above are less than 1:6 (8cm:45cm). They are short, sharp, steep hazards for cyclists. And the gaps each side are woefully inadequate - the example above being only 15cm from hump to dangerous edge.
They should therefore be removed in favour of a cycle-safe alternative.
1. NPWS replace the dangerously short, sharp, steep, bicycle
unfriendly speed humps at North Head with bicycle friendly
speed humps that conform with Austroads standards.
2. Manly Council liaise with NPWS until the problem is
and send these Strategic Recommendations
A better speed hump for cyclists