Home / Alberta / Questions / Road Signs Road Signs Report A 'Truck Route' sign directs: A All detour B Commercial vehicles to approved roads C Emergency vehicles D Only empty trucks Show Answer & Explanation Correct Answer: B. Commercial vehicles to approved roads Directs trucks away from residential streets. Previous Next More Road Signs Questions A 'Pavement Ends / Gravel Ahead' sign: A sign reminding drivers of the 1-metre cyclist rule: A 'Yield Right of Way' sign: A construction flagger's directions: A pedestrian crossover marked with X on pavement: Often Missed All Alberta Questions Smart Practice Mock Exam Road Signs Guide