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4 cards from this section. Quick, good the night before a test.
Define a summit curve.
Focus on the meeting of gradients.
What does SSD stand for in road design?
Think about the distance needed to stop safely.
What is the primary purpose of a summit curve in road design?
Think about what helps drivers in difficult situations.
True or False: SSD is not necessary in road design.
Consider the safety aspects of road design.
Design a summit curve where n = +6.0% and n = -2.0% with a specified speed of 50 km/h and SSD that must be at least 100m.
Use your knowledge of gradients and stopping distances.
If site constraints limit a summit curve length to 300m, analyze how it affects safety with an increasing gradient of +8.0% and a speed of 65 km/h.
Consider the effects of shorter designs on safety.
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