The symbol of the white stripes - black That is for the people across the street. Or as we call it coined as 'crosswalk' is actually the first to be white with black, as we see in the present.
Originally the four symbols of the cross used to be blue and yellow before. The first formal adoption. (Try it after frying) on the streets of England around the year 1949 to 1000 indicates that road users can use the area as a way to allow people. Can cross the street.
But this is the sign of the cross with. 'Pole lamp signal Beach Holiday Tea' is premised on the previous year since 1934 with the aim to serve as a signal to the vehicle traffic on the road and running. Moment to the people on either side of the walk across the street safely. By vehicles. Will stop when the light signal B. Bliss tea with orange lights.
Later, Leslie B. Horne Angeles tea Minister for Transport the elite. Who initiated the idea of such signal lamps installed is thought to be. Add symbols to highlight areas on roads, installation of signal lights. Allows users to see the car on the road is more pronounced because of this symbolic crossing of the color bar is born.
Then there was the white - red and white - the symbol painted black in 1951 as a symbol of the white stripe - black was used with signal lamps B. Sullivan. Sasha is officially the first time. And has been dubbed the 'crosswalk' because it looks like the stripes of a zebra.
The British have brought such ideas to their own settlement, such as Singapore, Australia and New Zealand are crosswalk, etc. become widespread throughout the world. And become a universal road markings.
ที่มาข้อมูล kungsss.exteen.com
ไม่มีความคิดเห็น:
แสดงความคิดเห็น