REGIONAL TRANSPORTATION DISTRICT. EQUIPMENT New board of directors approves lifts for 89 buses. RMN Ja 11, 1983 p.7 1st articulated buses begin express service. RMN N 15, 1983 p.8 Buys experimental double-decker bus from Lamar bus plant. RMN Ap 10, 1984 p.7 Hydrogen powered smogfree bus sits abandoned near Denver university RMN D 2, 1984 p.6,24 Will study use of diesel, methanol fuel. RMN Ja 28, 1987 p.8