Seconds after missing the 405 interchange, if you stay left on I-90 West, You’ll find some state patrol cars (often suburbans, tahoes, cruisers, etc) waiting to catch you. When you see people exiting to 405, do yourself a favor and slow down. You can often spot these cops much before you come near them, and if you’re really in a hurry I suggest staying in the far right lane of I-90 and getting behind a truck/some traffic so your speed can’t be properly observed. More than 50% of the time I pass this (I commute through here every day) I see either a cruiser in the median, or some flashing lights ahead (someone had already been pulled over and in the process of being ticketed). Happy driving!