

Cross Ties are a good way to tie a horse if you follow some common sense safety rules. All horses should learn to tie quietly and safely.
Always use a safety halter and ties should fix to something that will break if your horse gets panicked. I use a bit of twine, or a mid sized plastic wire-tie.
Cross tie with a wall behind the horse can touch. Not too long, never should be able to touch the ground. Short enough that they can not get their head turned past their shoulders.
A comfortable natural head position. I prefer to use the upper rings on the halter to tie in a head-to-head trailer.
Horses can see what is behind them when they lift their head. If your horse is worried, set up cross ties in the stall. Always tie the ends higher than the withers.
Never leave a horse alone, never introduce things they are worried about or try to do vet procedures with a tied horse.
Teach a horse to step away from you and never crowd you with their hindquarters, or shoulders.
Never tie to an object that can be removed, mirrors, water spigots, thin tree limbs, doors
trailers that are NOT hooked up. Tied by things they can paw and hurt themselves on, trailer license plates for example. Never tie with a hay net that will hang too low when empty.
Never tie a foal, use a lead just crossed around a place. They have weak necks and can cause damage to their necks and spines.
Never tie too close to another horse. Never tie by the bit, or with a chain. If you do use a lead with a chain do not clip the chain through the halter ring then back to the ring, leaving a loop in the chain. Most are the right size to stick a foot through. This is true when leading also, they could reach down to grab a bite and step right into the loop made by the chain.
All my horses learn to tie. First in cross ties, then to a sturdy hitching post. I vacuume all my horses everyday, they all stand in cross ties.
Never lead another horse under a cross tie past another horse.
All these rules sound like a lot, but they are really just common safety habits. Good Luck