A sign is required to be put up asking drivers to slow down to 30 km/h before entering Zone Y (see figure). On this road, vehicles require 174 m to slow down to 30 km/h the distance of 174 m includes the distance travelled during the perception reaction time of drivers). The sign can be read by 6/6 vision drivers from a distance of 48 m. The sign is placed at a distance of x m from the start of Zone Y so that even a 6/9 vision driver can slow down to 30 km/h before entering the zone. The minimum value of x is m. Direction of vehicle movement. Road - Sign X Start of Zone Y Zone Y
A sign is required to be put up asking drivers to slow down to 30 km/h before entering Zone Y (see figure). On this road, vehicles require 174 m to slow down to 30 km/h the distance of 174 m includes the distance travelled during the perception reaction time of drivers). The sign can be read by 6/6 vision drivers from a distance of 48 m. The sign is placed at a distance of x m from the start of Zone Y so that even a 6/9 vision driver can slow down to 30 km/h before entering the zone. The minimum value of x is m. Direction of vehicle movement. Road - Sign X Start of Zone Y Zone Y
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:A sign is required to be put up asking drivers to slow down to 30 km/h before
entering Zone Y (see figure). On this road, vehicles require 174 m to slow down to
30 km/h the distance of 174 m includes the distance travelled during the
perception - reaction time of drivers). The sign can be read by 6/6 vision drivers
from a distance of 48 m. The sign is placed at a distance of x m from the start of
Zone Y so that even a 6/9 vision driver can slow down to 30 km/h before entering
the zone. The minimum value of x is
m. Direction of vehicle
movement.
Road
Sign
|
X
Start of Zone Y
Zone Y
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