They had a low roof profile so that the railcar driver in his elevated cab could more easily see ahead when propelling them .
Of light weight construction , they weighed only 17 tons ( 17 tonne ) but each could seat 100 passengers .
passengers had a low roof profile so that the railcar driver in his elevated cab could more easily see ahead when propelling them .
Of light weight construction , they weighed only 17 tons ( 17 tonne ) but each could seat 100 passengers .