Conveniently, he doesn't mention the potential driver error scenarios facing an entire Irish population that has only ever driven on the left if it's forced to summarily change sides to cater to visitors. Unsurprisingly, there's opposition to his idea. The local automobile association calls it "completely impractical," for example. Cassidy, possibly realizing that his idea might fall flat, has a Plan B. This week, he suggested imposing lower speed limits on drivers visiting from right-driving nations, which could create an entirely different mess. After all, if the number of foreign workers and tourists is big enough to warrant specific driving legislation, slapping them all with a lower speed limit is going to put a lot of slowpoke out-of-towners on the roads. Here's a novel idea: visitors should adapt to the country they're driving in, instead of making the country adapt to them. And if, as a tourist, you're not comfortable with the left-side-drive arrangement, do yourself (and everyone else) a favor: don't drive.