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 ages. 



Age of trucks (months). 



Total 

 number 



of 

 reports. 



Average 



per cent 



of time 



lost. 





305 



285 

 46 



0.5 

 1.2 

 0.6 



13 to 24 



25 and over 



AU 



636 



0.8 





