It was the first purpose-built Soviet reconnaissance vehicle to enter service since the BA-64 and was built on the chassis and drive train of the BTR-40 armored personnel carrier.
[1] Another unique feature of the vehicle's design were two pairs of chain-driven auxiliary wheels, which could be lowered to provide additional traction on muddy terrain.
During World War II and the immediate postwar period, the Soviet Union and a number of countries embraced the concept of purpose-built armored scout cars designed to provide protection and moderate fighting capability to reconnaissance units.
[4] A few nations, such as the United States, rejected the same concept because they found armored reconnaissance vehicles to be counterproductive in reducing situational awareness and encouraging their crews to emulate tank tactics.
[6] The Soviet scout cars, by contrast, were lightly armed and armored, making them effective in the role of passive reconnaissance while still providing protection under cover for the crew.
[1] In 1956, the Dedkov OKB Design Bureau produced a prototype which utilized the automotive and chassis components of the BTR-40 but incorporated an entirely new, boat-shaped hull with amphibious capability.
[4] During the 1960s and 1970s, the scout cars were complemented in Soviet reconnaissance battalions by specialized variants of the BMP-1 infantry fighting vehicles, which were able to reconnoiter much more aggressively and engage hostile armor as needed.
[4] About 10,000 BRDMs were built for the Soviet Army and another 1,500 for export, primarily to East Germany, where it received the designation SPW-40P, and the People's Republic of Poland.
[1] The vehicle was criticised for its light armour and the vulnerability of its front-mounted engine compartment during combat, as well as its open top, which exposed the crew to enemy fire when operating the weapons systems.
[1] This was partly rectified by the introduction of an improved variant in 1958, which had a hermetically sealed fighting compartment and an overpressure system, reducing the threats from fragments and allowing the crew to reconnoiter contaminated environments.
[1] This and other shortcomings prompted Soviet engineers to begin work on a new model of the BRDM capable of carrying the same turret as the BTR-60 armored personnel carrier.
[7] Both Egypt and Syria deployed BRDM-1s during the Six-Day War; a number of these vehicles were captured by the Israel Defense Forces (IDF) during that conflict and subsequently reused in unconventional operations.
When the shutters are in their open position they protect driver and commander from being blinded by the sunlight and ensure that the windscreens won't be obscured by rain or snow.
The four additional belly wheels which can be lowered to improve the vehicles cross-country performance by reducing its ground pressure, and to allow it to cross trenches up to 1.2 meters wide.