回想起来，新加坡可能是设有楼梯最多的国家之一。
由于马路之阔及车辆之多，为了方便路人过马路，还要顾及能否让双层巴士通行，行人桥横阔马路需要有一定的高度。这就苦了过路人，需爬上斜倾的梯级，方能抵达桥的顶端。
随着国家人口年龄老化，过路的年长人士越来越多，要爬上梯级，不是一件易事。因此，多数的行人天桥都得翻新，加建电梯。那些没有电梯设备的天桥，便只好增添没有梯级的斜面人行道，以方便老者或残缺人士行动。
As I grow older and attain "senior citizen" status, I start to realize that climbing up the steps to use the overhead bridge to cross major roads can be quite challenging at times.
If one has a pair of bad knees, or poor exercise intolerance, climbing up the stairs is going to be quite a chore.
Some overhead bridges are upgraded with lift for the elderly and handicapped. But this does not apply to all.
The moral of the story - be healthy with good exercise tolerance and a good pair of knees/hip joints as we grow old!
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