Peterbilt 387 (1975)

This Model 387 was a heavy-duty Peterbilt truck developed primarily for off-road use, introduced in 1975 and sized between the 353 and the 383. When the 383 was discontinued in 1980, the 387 and the 353 largely took over its work. A later passage of the source article gives the run of this truck as 1976 to 1987, so the start of its production is stated slightly differently within one article. Peterbilt reused the number in 1999 for an unrelated aerodynamic highway tractor, which is recorded separately as the Peterbilt 387 of 1999.