LETTER: How to stop wrong-way collisions on the freeway

What I’m about to suggest will in all probability attract a lot of criticism, but I don’t care because I value people’s lives more than the cost of implementing what I believe to be a solution to the much-too-common occurrence of entering a freeway from the wrong direction. Consideration should be given to installing tire-shredding spikes at freeway exit ramps, preventing vehicles from entering from the wrong direction.