chapter 3 — signs, signals and road markings School, playground and crosswalk signs These signs tell you the rules to follow in areas where you need to be extra cautious.  Signs showing which lanes may be used to turn or go straight are mounted above the lane or at  the side of the lane before the intersection. If you are in a designated lane, you must follow the  direction indicated by the arrows. You may not move into or out of a designated lane while you  are in an intersection. Vehicles in both these  lanes must turn left Vehicles from both  directions must turn  left, no through traffic  allowed Go through or turn right Turn left only Continue straight only  Go through or turn left School zone — the tab underneath  indicates the speed  limit and the hours  that it is in effect  (in this case, the  30 km/h limit is in effect from 8 a.m. to 5 p.m. on school days) School zone — if the tab underneath  only indicates the  speed limit, that limit is in effect from 8 a.m. to 5 p.m.  on school days School zone — 50 km/h limit is in  effect from 8 a.m.  to 5 p.m. on school  days when children  are on the roadway  or shoulder Playground zone —  30 km/h limit is in  effect every day  from dawn to dusk Playground nearby  — be prepar ed to  slow down Pedestrian activated  crosswalk — prepare to  stop if the light is flashing Pedestrian crosswalk —  yield to people crossing  School crosswalk — yield  to pedestrians — if there  is a crossing guard, follow  directions School zone —  reduce speed  when children  are present Lane use signs 31