The turn station at hilltop gives you a good vantage point to do a tech inspection of the underside of most sedans. The high curbing plus the weight transfer to the outside makes the station itself fairly safe as the momentum takes the cars away. Going unprotected toward 3 or down the hill can get scary.
"The most exciting phrase to hear in science, the one that heralds the new discoveries, is not 'Eureka!' but 'That's funny...'" -Isaac Asimov