it was about east cost states 55 ft over all length laws from 60s and 70s and that started changing in late 80s going from 42 ft to 45 ft trailers to 48, then 53 ft by early 90s then the federal laws took over and 75 ft over all length was allowed and every body went to long nose trucks with walk in sleepers... cabovers hard to enter and exit, harder to work on,..jack cab over and tv set or 6 pack of drinks or what ever smash threw windshield,..newer trucks are very hard to work on with motors almost back under cabs and air flamings and all,...ant got no life, plastic junk!! and the emissions requirements are crippling the trucking industry, new 200,000 dollar trucks spending month or 2 in shop every other couple months to fix check engine lights,...or exhaust regeneration unit catches on fire and burns truck to ground.....trump was gonna ease government laws restricting small business trucking company's but that went out window with them mail in ballots.....