So, I have this friend whose boyfreind's sister's dog's cousin had this crazy experience. Ready?
She took the day off from work to run / play ultimate / help her roommate move / learn some Nihongo. All in all, it was going to be an awesome day, except it rained. Undeterred, she set out on a heroic run into Kanagawa prefecture, all the way out to Lake Sagamiko. The run was not flat, as she initally hoped, and she was pretty tired by the time she got to Sagamiko. But, she prevailed, until she found herself stuck between a rock and a hard place, the "rock" being the end of a road, and the "hard place" being a fence leading to a highway. So, she did the logical thing -- climbed the fence and ran along the highway (happily, mind you) until the Kanawaga Highway Patrol ran her down with a yellow van and orange flag and tried to communicate. Via hand signals, they together established that running on the highway is not allowed, and "choto mate" -- please wait a minute for the police.
She understood this, but was still a little confused, so she called her friend Satoshi and had him speak to the Highway Patrol in Japanese (trading the phone back and forth . . in the rain), much to the entertainment of Satoshi, who didn't know that his friend was a lawbreaker and/or fence-climber. All in all, the highway patrol were awesome, and they drove her to an EXIT, at which point they all waited together for the Tokyo Prefecture police to arrive and straighten out this poor confused gaijin girl. Satoshi ensured her that she was in no trouble and would not have to pay a fine, and so she stuck up friendly "conversation" with the highway patrol, who gave her a towel to dry off (it was raining) and let her choose the radio station in the van while waiting. They had some good laughs, and she discovered that it was their hajime te (first time) encountering an illegal gaijin in Asics on the highway.
The fuzz arrived, and they were ok, and they drove her all the way home (wearing helmets . . . in a car) so she didn't have to buy a train ticket. She tried to tell them that "daijo" -- they could just drop her off at the train station. To no avail . . . they seemed worried for her safety/sanity. In conclustion and in summary, it doesn't matter if she succeeds in this marathon for which she was training because she saved 190 yen on her training run. Thank you.