Well, first thing you have to do is figure out what thew liquid is. Is it clear, red, oily, smell sweet, etc? Sounds like the transmission cooler lines to the radiator from your description. Is it safe top drive? Depends on what the fluid is, how long it's been leaking and how much whatever the fluid is remains where it's supposed to be.. I know on the later models, there is no transmission dipstick to check the fluid level. Dealer serviceable only. If your has a dipstick and it is transmission fluid leaking from those fittings, check your fluid level. If no transmission dipstick, well, then, my recommendation is to take it in for service.