National Geographic : 1972 Feb
DO NOT PASS 8 warning signs of road sickness. Too many of our roads show signs they're not fit to drive on anymore. They're dangerously narrow, with buckling surfaces, hairpin turns, unsafe passing zones, soft shoulders, poorly marked railroad crossings. And a lot of other deadly little surprises. The problem is, over 200,000 miles of the roads we drive today were built over 40 years ago. And we haven't done much to up-date or improve them since. We can't ignore the situation because over 2 million people are injured and another 50,000 killed on our roads each year. And that's horrible. We have to bring all our roads up to acceptable safety standards. So we'll all have a better chance of staying healthy. Highways are the major link in our nation's total transportation network. We can't afford to allow them to decay. We have too much riding on them. A We can make the world a better place to live in. Caterpillarmachines will help. CATERPILLAR Caterpillar, Cat and 9 t Trademarks of CaterpillarTractor Co.