Question

Determine an appropriate yellow interval and red clearance interval for a signal phase under the following conditions: •Approach speed limit: 45 mi/h •Approach grade: 2% downgrade •Assumed perception-reaction time: 1.0 sec •Assumed deceleration rate: 11.2 ft/sec2 •Assumed average vehicle length: 20 ft •Width of intersection to be crossed: 60 ft

Answer 1

Required Yellow time interval = 5.333 seconds

Step-by-step explanation:

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