EXPERIENCE WITH MOTOR TRUCKS. 
27 
Table XX shows the average number of days 784 trucks of different 
ages were out of commission during the year preceding the time of 
reporting : 
Table XX. — Days trucks of different ages were out of commission when- needed. 
Age of trucks (months). 
Total 
number 
of 
reports. 
Average 
days out 
of 'com- 
mission. 
12 and less 
374 
354 
56 
0.8 
2.0 
2.3 
13 to 24 
25 and over 
All 
784 
1.4 
The total number of days the trucks of different ages were out of 
commission is as follows: 
Of 374 which had been in use 12 months or less — 
333 were out of commission no days. 
24 were out of commission 1 to 5 days. 
13 were out of commission 6 to 10 days. 
4 were out of commission over 10 days. 
Of 354 which had been in use 13 to 24 months — 
281 were out of commission no days. 
44 were out of commission 1 to 5 days. 
19 were out of commission 6 to 10 days. 
10 were out of commission over 10 days. 
Of 56 which had been in use 25 months or more — 
43 were out of commission no days. 
7 were out of commission 1 to 5 days. 
1 was out of commission 6 to 10 days. 
5 were out of commission over 10 days. 
Eighty-four per cent of the trucks had not been out of commission 
at all when needed, 9 per cent had been out of commission five days 
or less, and 7 per cent had been out of commission over five days. In 
general, the newer trucks are somewhat more reliable than the older 
ones. Practically 90 per cent of those which had been in use 12 
months or less had not been out of commission when needed. 
The average percentage of time lost on account of motor and tire 
trouble, breakage, and other mechanical difficulties, by 636 men own- 
ing trucks of different ages is given in Table XXI. 
Table XXI. — Per cent of time lost by trucks of different ayes, 
Age of trucks (months). 
Total 
number 
of 
reports. 
Average 
per cent 
of time 
lost. 
12 and less 
305 
285 
46 
0.5 
1.2 
0.6 
13 to 24 
All 
636 
0.8 
