Can anyone tell me the name of the movie where a group of teens are being chased through the woods by bad guys? I think the kids may have witnessed a murder and the bad guys notice them and try to catch them. Meanwhile the group of teens ( maybe 3 guys and 1 girl) make boobytraps to trip the bad guys up. The movie ends by all the bad guys being killed and a boy and girl getting on a dirt bike and riding away. The time frame for the release of this movie is mid 80s to early 90s.