This is the way you want to go if you want to get on the 15 to go north: http://goo.gl/maps/3820 or to go south: http://goo.gl/maps/SNOS. To go Norht, There’s about 7 lights and 3 stop sign with 1 speed bump. You’d rarely be stuck at a red light for long on Calle Cristobal. 2 of the lights are right turns, so you don’t have to wait for it to turn green. I’ve done that drive many times and average is 5-10 minutes, depending on how long the left turn is for getting onto Black mountain.