Everyone who has charge of a horse should be thoroughly conversant with the use of every part of the harness and know how to adjust it, and every driver or rider should make it a rule before starting to see that the harness fits properly, and that every part of it is safe and sound. If this were strictly adhered to, accidents would be much fewer than they are. While all parts of the harness are of importance, some are more so than others; thus the reins and bridle are of primary importance, then come the traces, back-strap, breeching, kicking-strap, etc. At the same time every part should be of strong, light, and good material, well made, suitable for its purpose, and free from superfluities. With uncertain horses the danger of using anything but perfectly-fitting harness of best leather and workmanship is obvious, but with any horse the consequences of using defective harness may be very serious. A broken rein has led to many a runaway, and a broken breeching to many a kicking-bout.
And important as is the quality of the harness its fit is almost equally so, for a badly-fitting bridle may be a cause of bolting, a badly-fitting saddle of kicking, and a badly-fitting collar of jibbing. The necessity of perfect quality, suitability, and fit in harness cannot be too strongly urged.